I would highly recommend using an MIT license - I think everyone working at GitHub uses it for all of our OS work. http://github.com/schacon/showoff/blob/maste

I would highly recommend using an MIT license - I think everyone working at GitHub uses it for all of our OS work. http://github.com/schacon/showoff/blob/master/LICENSE http://github.com/schacon/showoff/blob/master/LICENSE It is very open and people that are interested in learning from or using your code don't have to worry about licensing issues. If you are a hard-core copyleft advocate, then great, use the GPL - if you don't care, please use MIT. It makes people looking at your code not have to worry about exactly how they're using it and it makes sure they don't have to beg you to ask permission in case they want to use snippets in a non-GPL program.