This has been done before: <a href="http://www.chrisfinke.com/addons/facebook-scavenger/" rel="nofollow">http://www.chrisfinke.com/addons/facebook-scavenger/</a> and was shut down by Facebook<p>Facebook Scavenger was a Firefox extension that allowed you to export your friends' contact info, including e-mail addresses; Facebook will most certainly send Brad a takedown notice as well.