Risking charges of cultural appropriation, I'm going to come right out and say that I thinking tithing is a wonderful idea that Pagans should borrow and embrace . . . with some modifications to fit our diverse paths and beliefs, of course.
Tithing is the Biblical tradition of skimming ten percent off the top of one's income and giving it to one's church. This was an effective way to provide for priests and ensure that charity stays local, but there are a number of reasons why its literal application won't work for most modern Pagans. A few that come to mind are: