I've been using it for years. Lately, it has become a bit less vital, because I also make use of noscript, but It never hurts to have an extra sentinel. Except for this UGLY popup count that was added recently. Not as bad as a flashy ad, but annoying nevertheless. There is no need for it, since the count already appears on the toolbar icon! So please remove it again or give the user an option to suppress it.