I wonder if I'm the only one irked that the Techcrunch graph's vertical scale was in words and the Mashable graph was scaled in characters. If the goal is to show a link between longer post titles and Twitter, wouldn't it make sense to scale them both in characters? As it is, I can't really draw any conclusions from the Techcrunch graph at all.

Also, it would have been helpful to have a control sample of, say, random blogs from some of the major blogging services to compare to the other two.