There's also the whole breaking out of a frameset. But the link, or maybe an informative message (Hi, you're from Digg, visit here for the permalink etc etc), w

There's also the whole breaking out of a frameset. But the link, or maybe an informative message (Hi, you're from Digg, visit here for the permalink etc etc), would be better than rejecting Digg visitors, where many may not even be aware of the Digg bar. They just click on links on the homepage and see what's what.