Using browser extensions is a lot like tricking out your car with a new air spoiler, tinted windows, chrome rims, and big flame decals. Too much junk, and you bog down your ride and look silly. With thousands of Firefox extensions to choose from, the main challenge is finding the right ones--and avoiding the lame ones.
I've rounded up ten of the most useful Firefox add-ons, all of which strike the right balance by increasing performance and saving time. I'll let you worry about whether you should add racing stripes to your Toyota Camry.