It occurs to me that I probably don’t know this “person” at all!
I imagine that there are plenty of “people” (maybe bored teenagers?) who, out of whatever chain of cruelty and abandonment they themselves may have experienced, make it their “jobs” to try to poison strangers’ psyches via their blogs. That’s one of the unfortunate side-effects of the public nature of blogging.
You know, they look for relevant little bits of personal info in your posts, and I’ve certainly got plenty of that, and then twist it to make it seem as if they know you. It’s a cheap trick.
I’m actually not terribly bothered by this. I know I have the power to simply “zap” this crazy commentator. I sort of like thinking of this “person” as a facet of my own id, though.