What is the Creative Commons Attribution License?
The Creative Commons Attribution License allows anyone to download, reuse, reprint, distribute, or copy articles in PLoS journals, so long as the original author and source are credited. PLoS has chosen to apply this license to the works we publish. This broad license was developed to facilitate open access to, and free use of, original works of all types, and has been adopted by a growing group of authors and artists. Applying this standard license to your work will provide strong legal protection to you and those wishing to use your work, and thus ensure your right to make your work freely and openly available. Please see our licensing agreement.
According to the Creative Commons website, an attribution license allows others to copy, distribute, display, and perform the copyrighted work, and derivative works based upon it, but only if they give credit the way the author of the work requests. The tremulous-data package for example, is released under the CREATIVE COMMONS ATTRIBUTION-SHAREALIKE 2.5 LICENSE, which places a restriction, that all derivative works be released under an identical license, thus protecting the freedom offered with the work.
