What applies to newspapers, applies to bloggers as well.
…you can’t completely seal yourself off and just say we’re going to do social policy and international politics; you would have a very small readership. It wouldn’t work and you would become slightly irrelevant to the national debate so all newspapers become a mix of stuff that important and less important. (Alan Rusbridger,p17)
The blogs that I return to time and time again, are those that intersperse posts on the political/economic issues that directed me there in the first place with posts on other subjects such as education, entertainment and slices of the blogger’s personal life. A bit of humor doesn’t hurt either.