Tired of dealing with writing long messages in a <textarea> on a web page?
Usually, I'll copy out whatever draft I'm working on, fire up a new terminal window, paste the text into vim, edit it, and copy it back.
Copying it back is something of a pain at times. If it's a long bit of text that doesn't fit into a window, I scroll to the top, and copy it back in chunks. About as smooth as coarse grit sandpaper.
Of course, there is a better way -- just filter the entire buffer through pbcopy, and paste it back in one big chunk. (In vim, that translates into ESC H !G pbcopy <CR>)
(If only this hack would work as smoothly in Win* or my Ubuntu config...)