If you're familiar with StumbleUpon, the iPad app will be a very comfortable experience. Instead of browsing "stumbled" sites in a browser with a toolbar, the StumbleUpon app allows you to visit sites shared by others (within a couple dozen categories like "tech" or "babes") from your iPad, complete with sharing tools and the ubiquitous "Like" or "Don't Like" buttons for each page you visit.
The StumbleUpon app is nicely designed for the iPad, with all the features you could access in your browser, somewhat more conveniently arranged around the main window where you'll be viewing shared web content. There's not much more to this app, except that I wish StumbleUpon had taken the opportunity to leverage the touchscr
