I don't care if you have the most boring business in the world. There's always something interesting going on that can provide fodder for some great stories. I was looking at this article I found through Fark about Roto-Rooter. Looks like they put something out to let the public know about the five most interesting things they've recovered from drainpipes and trenches over the past year.
You can say what you want about Roto-Rooter, but this kind of thing is the perfect thing to blog about. If Roto-Rooter could have let the field staff write about the most interesting things that happened to them during the course of the day, I bet they'd have an interesting bundle of content after just a few months. Maybe not everyone would subscribe to the RSS feed, but it would help to make what on its face seems like a boring business more interesting.