First off I saw the above icon on Google images and thought it was cool.
Secondly I was listening to cnet’s Buzz Out Loud podcast and they mentioned a couple of cool Firefox keyboard shortcuts that I’m digging. Here are some of them:
Close a tab = Ctrl + W
New tab = Ctrl + T
Move to address bar = Ctrl + L
Move to Google Search box = Ctrl + K
Open downloads tool = Ctrl + J
Those are the major shortcuts that I use. Here are a bunch more.