Found a very nice addon for Firefox earlier, it allows you to resize any text area (e.g. the one you post replies and thread in).
https://addons.mozilla.org/firefox/3818/
VERY handy and nice addon I think
It makes the sides of the text box dragable just like a window.
https://addons.mozilla.org/firefox/3818/
VERY handy and nice addon I think

It makes the sides of the text box dragable just like a window.