Interesting thread on the topic: <a href="http://stackoverflow.com/questions/94346/can-i-legally-incorporate-gpl-lgpl-open-sourced-software-in-a-proprietary-clo/94433#94433" rel="nofollow">http://stackoverflow.com/questions/94346/can-i-legally-incor...</a><p>So having a hosted service with GPL2 would be ok, but GPL3 seems to be an issue.<p>It also opens the question on weither a project with just "GPL" specified (not 2 or 3) automatically moves to GPL 3.<p>I'm not sure to understand. I'll definitely go away from the library if I don't.