One of the topics at BlawgThink was how much a person’s blog should say about them personally vs. professionally.  Fred Wilson’s post The Soul of A Blog answers the question for me:

… most people like getting a sense of who I am.  They can quickly scan past the posts they don't want to read. But having those posts there gives them a sense of the other parts of me.

As I said to my friend when he told me about Dan's comments, "a diversity of post topics is the soul of a blog".  All head and no soul makes for a boring read.