Last night I stumbled upon something that has taken all of my willpower not to install. It's The Facebook Firefox Toolbar
It gives you a toolbar in firefox which allows you to do all those important facebook things like poking people, all while you're looking at other websites.
For those of you that experience Facebook withdrawal symptoms every time you start browsing other web sites, we built a new toolbar for Firefox. ...The toolbar gives you control over a set of pop-up notifications about incoming messages, pokes, friend requests, as well as when a friend writes on your wall, writes a note, or updates his or her status.
Sounds like a surefire way of not doing any work, ever.