Letterman Asks Spacey About "The Twitter"

Letterman's show: 3.7 million viewers of late. Tweeters following Kevin Spacey: 800,000 (including moi). Kevin trying to explain Twitter to Dave... Prioeless.

While Dave scoffs that The Twitter is a waste of time, the number of people following Kevin happens to equal 22% of Dave's nightly audience. 800,000 also happens to be the number of viewers separating Dave's ratings from Conan (now #2 in ratings for late night).