With the end of year upon us, it is good to see Lifehacker doing a review of good things for Firefox in 2010. Head over and give it a read.
I use Adblocker mainly as an additional security measure (yes, I have Google Ads on this blog) and this list escaped my notice.
Right now I am using Firefox Beta 8 and unlike the earlier betas this one has not given me any grief at all.