I'm waiting for someone to post a typology of bloggers. I suppose that if I performed a Google search, I'd easily find such an animal. In the mean time, though, I've observed that there are at least two kinds: those who, like Phil and Jonathan, blog often at length; and those who, like yours truly, blog intermittently and aphoristically (on good days).
Those who know me well will tell you that I can't shut up. I could probably compose lengthy blog posts, too. Problem is, when I have time to compose such a post, I don't have even the necessary minimum of mental energy. When I have the mental energy, I don't have the time. But I do like to blog. Honest!