What's with the blogs?

Hey peeps!
Today I'll share some of my confusion with you. You know the "Next Blog" thing at the top left of your screen? Well, how is it that the next blog is always
      a) about religion and God
      b) about someone's newborn kids and/or pets
      c) about something rather interesting, but hasn't been updated since, say, 2009
      d) in a language that's unknown to me.
 It's not that I don't respect all these people's need to write and share their life and beliefs, but are there any blogs about anything else? Like specific interests? Art, books, parties, music? And if there are, why is the "Next Blog" anything but?

Rant over.
Bye