Evan Shaeffer comes up with ten New Year's Resolutions for bloggers, especially law bloggers. He mentions me a couple times, in the context of recommending blogging on a variety of topics. I'd just say there are two kinds of blogs, the kind that pick one topic and stay on it and the kind that range over whatever topics the blogger feels moved to write about. One person might write both types of blogs. For example, lawprof Stephen Bainbridge has his wide-ranging blog and then a single-topic blog. And his single-topic blog, nicely, isn't about law. It's about wine. Do I have a specialized interest of the sort that I'd want to break out into a separate blog? I certainly wouldn't segregate the law material.
I actually had a separate blog for a while, and I used it for very lightweight, chatty material. I stopped because the software trial license I was experimenting with expired, and I was happy enough mixing up this blog with serious and very easygoing material -- you know, the kind of stuff that makes certain bloggers rail against me. Ann Althouse, who's supposed to be a constitutional law professor, wrote this, about nostrils, nostrils! Hey, I pick my topics, and, if I want, I can pick nostrils.