Here is a great article on 10 really cool, less well-known firefox extensions.
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Firefox extensions do all kinds of things, but how many that you use actually make you more productive? If you think about it I’m sure that you can come up with a reason for nearly all of your extensions as to why your more productive for using them. That’s why I’m not going to hit at some of the obvious ones that most people talk about, like IE Tab, DownThemAll, or Tab Mix Plus. I went browsing around the Web looking for ones that even I have never heard of, but I made sure that they are useful. Now you may have heard of a few of these, but they were all new to me so I thought there was a pretty good chance that most of them will be new to you, too.
