I don´t like the normal way to copy text. Mark a text area, hit CTRL + C or right click and select copy to copy that text area to the clipboard. I´am lazy I know but I was always looking for a faster way to copy a text area. The firefox extension Auto Copy is the answer to my prayers. It auto copies, hence the name, every marked text automatically to the clipboard.
Works with latest firefox, mozilla and thunderbird.

Auto Copy Firefox Extension
Copy Tables In Thunderbird
Firefox Auto Bookmark
Custom Prefix and Suffix Auto-Complete In Firefox
Nice. Now firefox on windows feels a little more like linux :)
If I can just get my middle mouse button to paste I’d be all set..