Browser tip of the day: Firefox by the numbers
One of my favorite Firefox features is the fact that you can navigate among tabs using your keyboard's number keys. Just hit Ctrl-1 to jump to the first tab, Ctrl-2 for the second one, etc. The problem is, if you've got more than two or three tabs open, it gets pretty hard to keep track of which number corresponds to which tab. That's why Derek Featherstone's Numbered Tabs Extension is one of my favorite Firefox extensions. Once installed, the extension adds a small superscripted number to the corner of each tab. No more guessing or getting fingerprints on the screen as you count off tabs. Of course, both the Ctrl+n function and the extension only work for up to 9 tabs, so if you've got more than that open, you're on your own.