This policy, as written here: http://wiki.hacdc.org/index.php?title=Licensing_Policy&oldid=9339 , was approved during the Regular Member Meeting 2013 06 11.
Point four of our Mission Statement says HacDC will freely share its research and discoveries, using what is learned to teach others.
In general, our licensing policy guarantees this mission point as well as ensuring that HacDC remains compliant with the spirit and letter of the law for 501(c)(3) exempt non-profit organizations.
Our licensing policy is considered a part of our general promotion of collaboration.
DO NOT CONTRIBUTE TO A HACDC PROJECT IF YOU ARE UNCOMFORTABLE WITH OUR LICENSING POLICY
 General Disclaimer
The web presence of HacDC, a District of Columbia Non-Profit Corporation, is an informational and collaborative space on the Internet. Our content is being provided freely, and no kind of agreement or contract is created between you and the owners or users of this site, the owners of the servers upon which it is housed, individual contributors to these pages, or project administrators, sysops or anyone else connected with this project subject to your claims against them directly. You are granted limited licenses in connection with your use of our web presence; it does not create or imply any contractual or extracontractual liability on the part of HacDC or any of its agents, members, organizers or other users.
Any of the trademarks, service marks, collective marks, design rights, personality rights or similar rights that are mentioned, used or cited on this site are the property of their respective owners. Unless otherwise stated, HacDC is neither endorsed by nor affiliated with any of the holders of such rights, nor can HacDC grant rights to use otherwise protected materials. Your use of any such incorporeal property is at your own risk.
Please note that the information found on a hacdc.org site may be in violation of the laws of the country or jurisdiction from where you are viewing this information. HacDC does not encourage the violation of any laws. The laws in your country may not recognize a similarly broad protection of free speech as enjoyed in the United States of America; HacDC cannot be responsible for potential violations of such laws, should you link to this domain or reuse any of the information contained herein.
For further information, please Contact Us
 Website, Blog and Other Creations
All contributions, content, services, and products produced by HacDC (except for our Wiki) are licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License by default.
For attribution purposes, we ask that you link back to the relevant content on hacdc.org and give credit to content creators, where applicable.
This is an excerpt of the license. Please visit the link above for the full text:
You are free: to Share — to copy, distribute, display, and perform the work to Remix — to make derivative works Under the following conditions: Attribution. You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Noncommercial. You may not use this work for commercial purposes. Share Alike. If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one. For any reuse or distribution, you must make clear to others the license terms of this work. The best way to do this is with a link to this web page. Any of the above conditions can be waived if you get permission from the copyright holder. Apart from the remix rights granted under this license, nothing in this license impairs or restricts the author's moral rights.
Because of the special nature of the content available on the HacDC Wiki, all contributions to it are considered to be released under the GNU Free Documentation License 1.2. Part of the Preamble is quoted below:
The purpose of this License is to make a manual, textbook, or other functional and useful document "free" in the sense of freedom: to assure everyone the effective freedom to copy and redistribute it, with or without modifying it, either commercially or noncommercially. Secondarily, this License preserves for the author and publisher a way to get credit for their work, while not being considered responsible for modifications made by others. This License is a kind of "copyleft", which means that derivative works of the document must themselves be free in the same sense. It complements the GNU General Public License, which is a copyleft license designed for free software.