IMO there are way too many people pool mining considering how low the difficulty is. Not trying to discredit suprnova, because the operator is trustworthy and I understand the necessity of pools, but I'd feel much better knowing that they don't control ~80% of the network. At 315MH/s I'm finding a block every 5 minutes mining solo, and the SHF goes straight to my account. No middleman, no waiting for confirmations, and no lost profit due to fees and latency.

Even with just one 280x you'll find a block approximately every hour at the current difficulty. So if you're currently mining in the pool consider switching to solo for a while until the network grows. If you need help setting it up I can give some advice.