I've started reading Ann Althouse's blog. (She's a law professor at UWisconsin.) It's remarkable! She posts many times a day, and they are real posts, not just sharing links. My friend David is convinced that she actually is a pseudonym for network of five or ten busy bloggers. She also has lots of variety in the posts--from political and cultural commentary to everyday descriptions of getting coffee on a snowy day.
I don't know if I want to put *that* much time into blogging, but she certainly points the way to doing blogs right.