Works well for me too. Rated 4 out of 5 stars
Been working well for me for months, though it lags behind sometimes since the rapid update schedule for FF began. But if you go to the homepage listed on the Add-ons Manager, yahoo usually has a more up to date version than firefox has. Not sure why it gets such bad marks. Sometimes I have to reload it, but not enough to be a problem.This review is for a previous version of the add-on (220.127.116.1110620112826.1-signed).