Cool Firefox tip – Instant on-page text search
Here’s a really cool Firefox tip that was just passed along to me. You can instantly search for any text on a web page by hitting the forward slash and typing that word. So for example, you want to find “Firefox” on this page, you would type /firefox – that’s it! The first instance of “Firefox” will appear highlighted. This slash search feature is really just a shortcut to Command-F but it’s a lot faster if you ask me. This works across all platforms I have tried. Oh, and if you want to find the next instance of that word, hit Command-G (or Control-G if you’re in the Windows world). Check out more great Firefox tips.

Even faster is to enable the “Find as you type” -option in the settings. Then you don’t need even the backslash, just type whatever you want and it searches the page.
Another cool feature is Hit the center mouse button to open a link in a new tab rather then using right click.