I use it when I'm working,
it's nice to have your text editor on one and a browser/terminal on the other, saves a lot of switching about especially if you're copying from one to the other, but for ordinary daily use the only thing that ever gets on my second monitor is the media player, and then only because I can.
( Moon Girl Technologies horrendous beanbag, Wed 10 Jun 2009, 18:54, archived)

yeah, i tend to have internet on one screen and a movie or game on the other

( well, Wed 10 Jun 2009, 18:56, archived)