Works for me Rated 4 out of 5 stars
When I installed this, I went into the Firefox Add-Ons (Choose Tools>Add Ons in the file menu bar) and changed the value HK$ to US$. I clicked on the Adsense icon and it brought me to the log in screen for adsense. It shows what I made in Adsense much like older versions of the program. It displays what is made today and on mouseover shows what was made today, yesterday, this month and last month.
I only gave it a four out of five because it doesn't give any other options such as ctr.