I tried to trade some LTC in the site yesterday. And I was surprised by how fast it was. The coins were instantly credited in my account after the confirmations and the trade was executed in a fraction of a second. Truly a perfect example of great coding. The withdrawals are near instant too. 

But there's one little flaw I noticed. After each trade is executed, a satoshi worth or the coin traded is stuck in the exchange and remains in your balance. Is this meant to be like this? It's nothing big but it's kind of annoying to see those little balances be there right after you've sold.