Tofu 2.0 was released yesterday, which allows reading simple PDF documents, has a less obtrusive full-screen mode, supports scrolling on MacBook trackpads and is a Universal Binary (that is, it includes a native build for Intel Macs). An alpha version with most of these features had been available for quite some time, but it had some bugs, and it only recently dawned on me how to solve the trackpad problem.
I have since released revision 2.0.1, which fixes some bugs in yesterday's release.
In case you don't know what Tofu is: it tries to make reading text on the screen more pleasant by wrapping it into columns, which you navigate from left to right without ever scrolling vertically.
Go and get it here.