(Computerworld) -- Welcome back, Firefox fans! We've helped you get started on your journey to browser perfection with our list of 20 must-have Firefox extensions. But the ability to tweak your browser is a double-edged sword. There are extensions best avoided, including some of the most popular.
Popularity shouldn't be the acid test to determine if you should install an extension. The important question is whether it enhances your browsing experience without any nasty side effects. The good news is that the extension community is actually pretty adept at self-policing. Most extensions that are truly "broken" (for instance, they crash your browser or suck up all your CPU power) either get fixed quickly or simply vanish.
But some extensions are "bad" in unapparent ways, or just don't provide enough benefits to be worth running. So, in no particular order, let's look at 10 to avoid.
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