Kariina

Can anyone makes exchange of money (buy-sell) without LindenLab? I don't mean small money transfers between avatars.I'm talking about serious work with promotional announcements, messages in groups, individual promo-messages to avatars and use payment from hand to hand. I'm asks because not I think to do It, but because someone sent me promo-messages with offers to buy-sell L$ and told that It's absolutely legal.