zlacker

"Giving back" is cute but it doesn't make up for taking without permission in the first place. Taking someone's stuff for your own use and saying "here's some compensation I decided was appropriate" is called Eminent Domain when the government does it and it's not popular.

Many people would probably happily allow use of their work for this if asked first, or would grant it for a small fee. Lots of stuff is in the public domain. But you have to actually go through the trouble of getting permission/verifying PD status, and that's apparently Too Hard