I recently came across the web page for Google Firefox tools .
Google really has a amazing collection of tools for Firefox.
1) Google toolbar : Instant suggestions as you type in the search box, bookmarks you can access from any computer, automatic web form filling. So if I have this toolbar and am signed in at two different computers, I can access my bookmarks from anywhere. Couple this with easy interface to Google search and we have a winner.
2) Browser Sync : Synchronize your browser settings across computers. Restore tabs and windows from your previous session. The best feature is that the settings on my home computer and Office are exactly the same.
3) Notebook: Add text clippings, images and links to your Google Notebook and share them with friends. I have not used it, so cannot comment on this.
4)Blogger Web Comments : See what bloggers are saying about the web page you're visiting, and add a post to your own blog.
Possibly the best tool for blogger users. I use it extensively. Whenever I comment on any blogger post, it links the same to my own blog post so that I can easily keep track of it.
5)Google Send to Phone:Send text messages of web page content to your mobile phone (U.S. numbers only). I stay in India, so have to wait a little more.
Some Firefox shortcuts :
( DISCLAIMER :: Taken from other blog sites, thanks to them )
Close Tab Ctrl+W Ctrl+F4
Restore Recently Closed Tab Ctrl+Shift+D
Close Window Ctrl+Shift+W Alt+F4
New Tab Ctrl+T
New Window Ctrl+N
Select Tab (1 to 8 ) Alt+(1 to 8 ) [ Windows Ctrl +(1 to 8) ]
Select Last Tab Ctrl+9
Bookmark All Tabs Ctrl+Shift+D
Select Location Bar Ctrl+L F6 Alt+D
Open Address in New Tab Ctrl+Enter
Web Search Ctrl+E Ctrl+K
Next Tab Ctrl+Tab Ctrl+Page Down
Previous Tab Ctrl+Shift+Tab Ctrl+Page Up