In the context of an adult roleplaying sim, would having one player wager Lindens and the other player wager sexual services violate the anti-gambling TOS? The game operator would not be getting a skim, so I see this as more like prostitution RP than gambling, even though it does seem to fit within the literal words of the anti-gambling TOS (unless you view this as not having a "payout" like a real gambling game does).