Personally, the revelation that left-wing bloggers swear a lot more than right-wing bloggers wasn't all that much of a surprise. Simplistic, "neener-neener I know you are but what am I?" ripostes seem to me a leitmotif of the extreme left. I see them all the time, and vote Republican accordingly. What is far more difficult to measure with a simple plot is that extreme right wingers may not swear as much, but the things they do say nicely tend to be scarier.
Essentially, it seems you have to be a little extreme to run a political blog, and just to the right of Darth Vader (or to the left of Big Brother) to comment on one.
Via Instapundit and, well, Instapundit.