Hmm ... did I have another thread similar to this one? I'm not sure. I don't think so...
But, maybe. My apologies if this is a duplicate.
What's been said here about SL is not entirely true. I've learned, in my six days of playing, that one can make money (i.e., Linden dollars) in various ways. These include, but are not limited to, dancing in clubs, selling drugs, and something called "camping." LOL (Seriously.) And I already checked, and no, one can't get arrested for doing these things in SL.
You CAN spend real life money, though. But I wouldn't.
OK, I'm off to read that link that the Lieutenant posted. The title made me laugh!