Update!
Site performance, UI tweak update. The site was very slow due to a couple of bugs and the polling nature of the initial design. Hopefully, the bugs have now been squished and I've migrated the site to server push instead of polling, which should reduce the number of HTTP requests the server had to service.
UI tweaks:
I've removed the auto form submit when you changed the receiving/refund address because the presence of the 'submit' button meant that people pushed submit only to have what appeared to be nothing happen since the form had already been submitted on blur. Now you have to press submit.
Changed the default display under the market quote to list the max recommended buy/sells sizes, which are row 1 of our orderbook.
Added a small title to the quotes to make it more obvious what they are.
Cheers, Paul.