I think it would be fine anyway as I said because you can't deposit and gamble your own money. It's effectively just me giving away prize-money for winning online games here. There's no entry fee or ability to buy more of anything.
That'd go towards the overall value of everyone's vCash rather than giving you more to play with yourself. It's a grey area though; I'd probably have to avoid putting donations into the total, so to speak.
Spot on. However the more you post, the bigger your % stake. Someone to come up with clever maths to determine which approach is better.