Actually it's nothing to do with collaboration. The source is fair source because I want you to be able to check that there are no phone home methods sending me

Actually it's nothing to do with collaboration. The source is fair source because I want you to be able to check that there are no phone home methods sending me your source code. The GPL portion is there to ensure that if someone does use this and I loose interest or die at a specified time they can continue to use it as they see fit. I'm not trying to deceive anyone through these decisions.