So, you do something in a virtual world and you get a random item. Say, you kill a dragon. The item has real-world value. You obtained it as a result of three things: You paid or registered to play the game, you performed an action that may have required skill or maybe not, and the system executed a random item generation process. Still, it's not gambling. Right? It's monster-raiding. OK, now you go into a social network and do something and you get a random virtual item of nontrivial value. Say, you 'Liked' somebody's pic and you got a free...