I use Google Analytics to track the small amount of traffic my humble blog receives. I'm not going to admit how small that traffic really is, but yesterday saw a massive spike on visits to Furious Cognition. Though I didn't intend it, I think the heading "Heath Ledger Dead" attracted some extra search engine hits, which is a little less than half my overall traffic.
So when I'm dissatisifed with visits to my site, I'll just throw in a "Britney Spears Goes Beserk at Grocery Store," or "American Idol Contestant X Makes Ears Bleed" to get those hits back up.