These cloudhashers.net payouts are unsustainable  because it totally ignores future mining difficulty. Simple math folks.

I hope everyone understands this. At a certain definite time in the very near future, cloudhashers.net will simply stop all payouts and disappear.

PBMining (disclosure: I do have a stake there) is more sustainable because payouts are tied to difficulty (notice how the weekly payouts are a string of decreasing amounts.) Cloudhashers.net should do likewise if they expect to stay in the game.

Maybe not though ...probably still trying to figure out customers' outgoing btc spending problems...