And yes, there's a lot of 3D there.  People pay actual cash for textures, models, characters, etc.  Just like Poser.  Some people make thousands of dollars a month.  Prices tend to be very low, but they make it up in volume, there being a heck of a lot more gamers than Poser users out htere.

In fact, Poser models being ripped off and sold in Second Life is apparently pretty common. We had at least one person post here who admitted that she bought Poser solely and wholly in order to use to it to convert Poser content to Second Life, so she could sell it.

And at least one merchant found his products being ripped off for Second Life.