Interesting thread on the topic: http://stackoverflow.com/questions/94346/can-i-legally-incorporate-gpl-lgpl-open-sourced-software-in-a-proprietary-clo/94433#94

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