It looks great. Please, add additional information to the hovering info (when passing the mouse over the BTC bar button). I suggest to add a clock, so we can know how long it's going to take the following refresh in the information, and add also the percentage amount of increment/decrement value. I'll take a look to the code, later.

This extension is great. I'm leaving 4 stars instead of 5 because I think that it would be better if more digits were displayed, i.e. "13459" instead of "13k", as well as rounding down instead of up, i.e. if the price is $12999 display "12k".

Good and simple extension but lately almost every currrency is displayed wrong again. Only Euro and British Pound are shown correct. Please fix it, then I can give 5 stars.