Here's another article that mentions, at least twice, commenting and visiting other blogs in your "niche. (Sunil)."
Yet another source discusses "how to create your own niche blogging masterplan...(Maki)."
More still, there is a video over at 5 Minutes for Mom about this subject!
I'm not really sure I want to do that, and I'm not really sure I CAN do that. Here are 13 things I could write about.
13. Write about anything I want! I have no specialty! I'm a "Jill-of-many-trades" and "mistress-of-none."