I started blogging recently (the start of the new year, actually), and it's been quite interesting watching the analytics bounce up and down depending on what I've posted that Monday/Wednesday/Friday.

Perhaps the most striking thing I've noticed is that when I blog about Haskell, I get a lot of hits. :-) Perhaps that says something about the importance of keeping audience in mind.

As your standard egotistical human being, I'd love to increase readership. That's a great validation for me. But it definitely means that you have to write about more popular/accessible subjects. And there's a lot more competition there.