Apart from the odd little easter egg hiding in the background, Tweefax essentially only has three pages.
1. Tweets from an individual. You can pass in the username and go to their page by substituting it for Tweefax in this URL. tweefax.com/101/tweefax
2. Trend/search results. Again, with some URL dabbling, you can search for anything you like. Notice that it's now page 200 you're using, not 101 for a user. tweefax.com/200/tweefax
3. The home page at 100. This is a list of the 20 more recent trends, together with a random recent tweet from the database.