I agree with the sentiments posted re: the Poloniex interface. Poloniex has done a great job. It's not perfect, but it is hands down the best interface I've seen. One feature in particular that @Ander mentioned is especially important. And that has to do with the order book. As Ander mentioned, it is imperative that when you click on a price in the order book, let's say on the ask side, it populates the quantity field of the order form with the total number of coins up to that price, not just the number of coins available at that price alone. This may seem trivial to some, but I assure you it is not. We need to make sure we get this right in the new webwallet. The current web wallet is lacking in this way.