They haven't spent as much as other sites that had no option but to close and I remember they said they weren't going to get in to big debts to be competitive, so I think they wont close unless they want to. I don't get many sales but I think they have enough to keep going, like FeaturePics who have been around since 2004.
Cutcaster could do better by paying 50%, I think they pay 40% now? That small change could give them a big boost, it would get me uploading again.