On Slashdot, there's a popular joke about how most people don't read the article listed before they comment on the topic - presumably by reading the summary or, in some cases, just the headline. On Digg, however, the stories are voted popular by people who have user accounts on the site. This is normally okay, but the video below demonstrates just why Digg is such a bad idea :P
If you don't get it, see exactly when the options for digging/burying are enabled and when they're disabled.

4 comments
Cannot view the video. I get a message saying the video is not available.
Changes have been made. Try now.
I didn't get it.
The digg/bury buttons are only enabled when you can't see the comment. When you can actually see the comment and decide if it's worth burying/digging, you can't.