Forum:Text Looks Squished

I've noticed recently that the text on this wiki appears very squished compared to other wikis, and I'm wondering why. I'm using the latest version of FireFox but it looks the same on IE 7.

Mass Effect Wiki

Wikipedia

As you can see, the Mass Effect wiki is organized into very narrow columns down the middle, while Wikipedia has its text stretch across the screen. Personally I don't like the narrow columns down the middle and I'm wondering if there's any way to change it so the column is not so narrow.