Lifehacker recently posted it’s Top Ten firefox extensions for 2009. Number ten on that list was Autocopy, an extension that automatically copies selected text and lets you paste it with just a middle click — within Firefox only of course. Although this behavior is somewhat standard in Linux it does not extend to Firefox.
One of the options in the AutoCopy preferences is to use the Copy Plain Text extension. What this does is strip formatting from the text you copy. This is very useful if you are trying to copy marked up text or text from a table.
Using these two extensions together save a bunch of keystrokes, mouse clicks, and time wasted stripping out foramtting by hand.