*holds hand up to shield eyes from view of something awful whilst repeating LA-LA-LA-LA-LA*

I do that a bit in Second Life. For instance, it's possible for unscrupulous - well, dishonest - people to steal original textures, which they can then upload and use to make the clothes or what-have-you with no effort. I've seen my original work being sold by a stranger (for double the price, too) and I just wandered off in shock to have a think about what to do. That was months ago. I decided:

1. There's really nothing to be done.
2. LL can't do anything.
3. Filing a DMCA thingummy and hiring a lawyer and making a big stink would likely result in nothing fruitful anyway.

I just cover my eyes and go LA-LA-LA-LA-LA. I must admit I have been just a tiny bit less eager to create clothing, though. I don't really see a solution to this - I'd like it if everyone grew a set of ethics but I won't hold my breathe.