Real money in Second Life

As things go bad in our first lives, apparently some performers are making money in Second Life. I've spent a lot of time listening to live music. I've spent only a little time in SL, just doing projects for my MBA program, and I must say I don't see the attraction of listening to music in SL. Maybe I'm just Old School, but performances need to be seen live to get the real experience. But, if people can make some extra cash by working as virtual performers, I say good for them.