Frankly, congrats for the continuous and constant work on it.

Can I just bring to your attention that there are still inconsistencies in the UI that you might not be aware of ?
For example when I am in the BTS/bitUSD market, and that I buy bitUSD, I get a notification that I just sold BTS.
Though this is technically true, it is very confusing indeed when I click on buy the last thing I want is a message telling me that I sold, else I will be wondering if I made a mistake !

Also next to this, when I look at the activity that is logged for my account : I see that I sold (again) BTS. And if I click on the market, I land in bitUSD/BTS market which is not the market where I want to go, I want to go back to BTS/bitUSD market where I originally bought bitUSD.
I wonder why it is all mixed up like this ? I am sure I am not the only one who is confused by this.

Also have you considered adding a mobile phone version ? i.e without graphs and with much less depth to the book order (could be set in options for example) ?
This would be great for slow mobile connections and would also help servers to deal with more connections at the same time...