"I really hope Bitfloor is successful."
Don't just hope. Put action behind that hope. Trade there. BitFloor will be successful if enough people trade there. Vote with your bitcoins. Put your orders there, be they large or small. I've tried a lot of different exchanges. You need to check how you're going to get USD or other fiat currencies in and out of the exchange. If, after looking at the exchange, you like what you see, send a small amount or USD or BTC there and do a trade. If all goes OK, send more and repeat. Before you know it a new exchange has grown from nothing to a reliable alternative with good service. Follow that advice for BitFloor and the whole Bitcoin community will be better off IMHO.
Thanks, Captain Obvious - I already trade there, hence my posts about my experience. I thought it would be obvious that by success I meant more business than just mine.