http://www.smashingmagazine.com/2010/03/24/a-short-guide-to-open-source-and-similar-licenses/
http://opensource.org/licenses/mit-license.php
http://www.gnu.org/licenses/gpl-howto.en.html
Relicensing VLC from GPL to LGPL: http://lwn.net/Articles/525718/
https://blog.qt.io/blog/2009/11/30/qt-making-the-right-licensing-decision/
Creative work:
https://creativecommons.org/licenses/
Comparison:
https://en.wikipedia.org/wiki/Wikipedia:Comparison_of_GFDL_and_CC_BY-SA
http://stackoverflow.com/questions/243196/what-is-the-difference-between-creative-commons-and-gpl-licensing
