Obviously I'm concerned about a sudden closure (and for the liquidity swaps a rapid fall resulting in losses against my loaned funds); however, I am finding it relatively difficult to evaluate that risk.
Based on their volume and fee structure, do you think its likely that they are generating enough money to not be tempted to cut and run? Are there developers/admins here/in the community that are well respected? How long have they been in business?
They should be making considerable amount of money. But if they are hacked, it's possible that they will run away with the money. Who knows. I still think that they should manually check all withdrawals.