I have made a little update today - add new field "payment history", as deepbit API did.
In addition I'm finishing bitcoin.cz support so tomorrow Slush's fans should be happy.

About Firefox:
So... I have changed my favourite browser from FF to Chrome for many reasons
and one of them is easiness of making extensions.
to make Chrome extensions one should know web technologies like HTML, JS and CSS
to make FF extensions one have to learn XPCOM and XUL which are difficult and kind of "exotic"