Online Education Database ranks library blogs, here. I read, like, two of those.

For now, I'm not so into people Musing About the Profession, networking, and positioning themselves. I like funny ones. I like ones that make me say, Yeah, that happens to us, too: glad we're not alone! And, in a way, I do learn stuff from those, in that the stories of others often model ways (good and not so) to handle crazy (yet typical) library situations.