Tip Jars in Second Life

There's an interesting post over on [livejournal.com profile] filk about the use of tip jars in Second Life. Evidently someone set up a tip jar to benefit [livejournal.com profile] filkertom (who recently sustained an injury that prevents him from working) and intends to keep doing this on a regular basis.

Does anyone else here have any experience with SL tip jars? Does that seem like a useful mode for cyberfunded creativity?