Welcome to Sigma Marketplace!

Site Policies


Thank you for considering the services and content offered on Sigma’s family of websites.

For both your protection and ours, we have established the following terms of use which we expect all our visitors, whether registered or not, to follow while on our sites. Your continued use of our sites means that you acknowledge these terms of use and agree to abide by them at all times. Because we reserve the right to modify these terms of use at any time without notice to you, please check them regularly. Please note that you will be referred to as "user" in this agreement.


You agree and continue to agree to use our websites in a manner consistent with all applicable laws and regulations and in accordance with the terms and conditions set out in the policies and guidelines outlined below.


In consideration of your use of the sites, you agree to: (a) provide true, accurate, current, and complete information about yourself when prompted by the site's profile form and (b) maintain and promptly update that information to keep such information true, accurate, current, and complete. Please note that our sites are not intended for the use of minors under the age of 18 unless the usage is accompanied by the consent of the applicable parent or guardian of the user.

By establishing an account or registering on one of Sigma 's websites, you are considered a registered user on the following: Sigma Marketplace and the Virginia Henderson Global Nursing e-Repository. You may access these sites utilizing the same user id and password. If you have registered on one website, you are considered a registered user of all three sites


If you choose to complete a profile, you will determine a password to be accompanied with your email address to complete the registration process. You are responsible for maintaining the confidentiality of the password and user ID, and you are fully responsible for all activities that occur under your password or user ID. You are to (a) immediately notify us of any unauthorized use of your password or user ID or any other breach of security by calling 1.888.654.4968 or email customerservice@nursingknowledge.org, and (b) ensure that you exit from your account at the end of each session. Upon being notified, Sigma Marketplace will initiate a process to investigate your claim. We cannot and will not be liable for any loss or damage arising from your failure to comply with this section.


We strive to provide the best user experience possible by ensuring that our site fosters interaction in a safe and respectful manner. However, we do not control the information posted on our bulletin board, chat rooms, and other public areas (herein called Public Areas) and do not guarantee the accuracy, integrity, or quality of such content. You understand that by using Public Areas you may be exposed to content that is offensive, indecent, or objectionable. You agree that you bear all risks associated with the use of any content, including any reliance on the accuracy, completeness, or usefulness of such content. Under no circumstances will we be liable in any way for any content, including, but not limited to, any errors or omissions in any content, or any loss or damage of any kind incurred as a result of the use of any content posted, emailed or otherwise transmitted via Public Areas. Certain behaviors will not be tolerated on our site, and by continuing to use our site, you are agreeing that you will not post any of the following material in our Public Areas:

  1. Advertising or any form of commercial solicitation.
  2. Material which is untrue or which defames, abuses, harasses or threatens others.
  3. Statements that are bigoted, hateful, mean spirited, or ethnically or racially offensive.
  4. Material that advocates illegal activity or discusses illegal activities with the intent to commit them.
  5. Unauthorized copyrighted material, including, but not limited to, text, sound or graphic files.
  6. Material that contains vulgar, obscene, pornographic, or indecent language or images.

You acknowledge that we do not pre-screen content. Any posted content solely represents the views of the user who posted it and does not represent the views of, validation by, or endorsement of Sigma Marketplace. We shall have the right, but not the obligation, in our sole discretion to refuse or remove any content that violates the above terms or is otherwise objectionable. Any user who posts objectionable material on our site will be responsible for all of our damages, direct or indirect, arising from such posting. In addition, depending on the nature and extent of the violation, we may, at our sole discretion terminate such user's account.


Our site may provide links to third party websites. Because we have no control over such third-party sites, you acknowledge and agree that we are not responsible for the availability of such external sites or resources, and do not endorse and are not responsible or liable for any content, advertising, products, or other materials on or available from such sites or resources. You further acknowledge and agree that we are not responsible or liable, directly or indirectly, for any damage or loss caused or alleged to be caused by or in connection with your use of or reliance on any such content, goods, or services available on or through any such site.


We grant you a personal, non-exclusive, non-assignable, and non-transferable license to use and display the contents of and services on our site. Unauthorized copying or duplication of the contents in any manner including software that has been modified, merged, or included on the site, or the written materials associated therewith is expressly forbidden. You acknowledge that you may not sublicense, transfer, sell, or assign this license or the services received thereunder. Any attempt to sublicense, transfer, sell, or assign this license is void.

Unauthorized access to registered areas of the site by non-registered users is prohibited.


Users may post reviews, comments, and other content and submit suggestions, ideas, comments, questions, or other information, as long as the content meets our Rules of Conduct and does not consist of or contain software viruses, chain letters, mass mailings, or any form of "spam." You may not use a false email address, impersonate any person or entity, or otherwise mislead as to the origin of a card or other content. Sigma Marketplace reserves the right (but not the obligation) to remove or edit such content, but does not regularly review posted content. If you do post content or submit material, and unless we indicate otherwise, you grant Sigma Marketplace and its affiliates a nonexclusive, royalty-free, perpetual, irrevocable, and fully sublicensable right to use, reproduce, modify, adapt, publish, translate, create derivative works from, distribute, and display such content throughout the world in any media. You grant Sigma Marketplace and its affiliates and sublicenses the right to use the name that you submit in connection with such content, if they choose. You represent and warrant that you own or otherwise control all of the rights to the content that you post; that the content is accurate; that use of the content you supply does not violate this policy and will not cause injury to any person or entity; and that you will indemnify Sigma Marketplace or its affiliates for all claims resulting from content you supply. Sigma Marketplace takes no responsibility and assumes no liability for any content posted by you or any other third party.

Any posting of the following material is strictly prohibited:

  1. Unauthorized copies of or links to any unauthorized use of copyrighted photographs, drawings, graphics, text or other writings, computer programs or other software, recordings or designs; files containing advertisements or solicitations aimed at persuading other members to use certain goods or services; any material or links to material of a sexually explicit nature, including photographs and text.

  2. Copyrighted material, including without limitation text, photographs, sound, video, and music, may not be placed on the site without the express permission of the author or owner of the copyright on the material. You acknowledge that only the owner or someone authorized by the owner to post the material may do so. The downloading of copyrighted material is allowed by you but only for your own personal use. You may not copy, reproduce, retransmit, distribute, publish, commercially exploit, or otherwise transfer any copyrighted material. The burden of determining that any information, software, or any other content on the site is not protected by copyright rests with you. You acknowledge that we and third-party content providers remain the owners of the posted materials, and that you do not acquire any of those ownership rights by downloading or posting copyrighted materials. If you have questions about permissions issues, please email us at customerservice@sigmamarketplace.org.


Sigma Marketplace hereby authorizes you to copy documents published in the internet by Sigma Marketplace solely for your personal, non-commercial use, provided that each copy of these documents which you make shall retain all copyright and other proprietary notices contained herein. Nothing herein should be construed as conferring by implication, estoppel, or otherwise, any license or right under any patent or trademark of Sigma Marketplace or any third party. Except as expressly provided above, nothing contained herein shall be construed as conferring any license or right under any Sigma Marketplace copyright.

This publication is provided "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MECHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. Some jurisdictions do not allow the exclusion of implied warranties, so the above exclusion may not apply to you.

Should any viewer of a Sigma Marketplace published document respond with information including feedback data, such as questions, comments, suggestions, or the like regarding the content of any such Sigma Marketplace document, such information shall be deemed to be non-confidential and Sigma Marketplace shall have no obligation of any kind with respect to any such information and shall be free to reproduce, use, disclose and distribute the information to others without limitation. Sigma Marketplace shall be free to use any ideas, concepts, know-how, or techniques contained in such information for any purpose whatsoever, including, but not limited to developing, manufacturing, and marketing products incorporating such information.

Sigma Marketplace respects the intellectual property of others, and we ask our users to do the same. If you believe that your work has been copied in a way that constitutes copyright infringement, or your intellectual property rights have been otherwise violated, please provide Sigma Marketplace’s Copyright Agent the following information:

  1.    An electronic or physical signature of the person authorized to act on behalf of the owner of the copyright or other intellectual property interest

  2.   A description of the copyrighted work or other intellectual property that you claim has been infringed,

  3. A description of where the material you claim is infringing is located on the site,
  4. Your address, telephone number, and email address,
  5. A statement by you that you have a good faith belief that the disputed use is not authorized by the copyright owner, its agent, or the law,
  6. A statement by you, made under penalty of perjury, that the above information in your notice is accurate and that you are copyright or intellectual property owner or authorized to act on the copyright or intellectual property owner's behalf.

Sigma Marketplace Copyright Agent can be reached as follows:

Sigma Marektplace
Attention: Executive Director
550 W. North Street
Indianapolis, IN 46202 USA


You agree that use of our site is entirely at your own risk. Our site and the services provided therein are provided "as is," without warranty of any kind, either express or implied, including without limitation any warranty for information, services, uninterrupted access, or products provided through or in connection with the service, including without limitation our software or services licensed to you and the results obtained through the service (unless such warranties are legally incapable of exclusion). Specifically, we disclaim any and all warranties, including without limitation: 1) any warranties concerning the availability, accuracy, or content of information, products or services; and 2) any warranties of title or warranties of merchantability or fitness for a particular purpose.

This disclaimer of liability applies to any damages or injury caused by any failure of performance, error, omission, interruption, deletion, defect, delay in operation or transmission, computer virus, communication line failure, theft or destruction or unauthorized access to, alteration of, or use of record, whether for breach of contract, tortious behavior, negligence, or under any other cause of action. You specifically acknowledge that we are not liable for the defamatory, offensive or illegal conduct of other users or third parties and that the risk of injury from the foregoing rests entirely with you.

Our entire liability and your exclusive remedy with respect to the use of our services is the cancellation of your registration with us.

Neither we nor any of our agents, affiliates, co-branders, partners, or content providers shall be liable for any direct, indirect, or incidental damages, lost profits or special or consequential damages arising out of use of the site or inability to gain access to or use the site or out of any breach of any warranty. You hereby acknowledge that the provisions of this section shall apply to all content and services on the site.

Sigma Marketplace is a trademark of Sigma Theta Tau International Honor Society of Nursing. Any other service marks or trademarks appearing on the site are service marks or trademarks of their respective owners. You shall not display, disparage, dilute, or taint our service marks or use any confusingly similar marks or use our mark in such a way that would misrepresent who the proper owner of such marks is. You shall not use the trademark Sigma Marketplace without the express written consent of Sigma. If you are granted permission to use our service mark, any use of our service mark by you shall inure to our benefit.


We may give notice to you by means of a general notice on the site or via email to your email address on record. You may give notice to us, and such notice shall be deemed given when received by us, at any time by any of the following:

  1. Electronic mail to: customerservice@nursingknowledge.org
  2. Letter delivered by first class postage prepaid mail to the following address:

    Sigma Marketplace
    Attention: Executive Director
    550 W. North Street
    Indianapolis, IN 46202 USA 

Upon our request, you agree to defend, indemnify and hold us harmless from any dispute which may arise from your breach of the terms of this agreement. You agree to hold us and our affiliates, employees, contractors, officers, directors, co-branders, partners and content providers harmless from any and all claims and expenses, including attorney's fees and court costs, related to your violation of this agreement, including the rules of conduct, or any information, software, files, messages or other content placed on our site by you. We reserve the right, at our own expense, to assume the exclusive defense and control of any matter otherwise subject to indemnification by you. In that event, you shall have no further obligation to provide indemnification to us in that matter.

We may terminate your account or access rights to the site at any time, without notice, for conduct that we believe violates this agreement or other policies or guidelines that we have posted on our site.


By using this site, you signify your assent to the Sigma Marketplace terms of use and privacy policy. If you do not agree with these terms and our privacy policy, please refrain from using our site. Your continued use of the Sigma Marketplace site following a reasonable notice of changes to our privacy policy or terms of use will mean you accept the changes.