It will be under your Kalamity Jane name so "you" are pretty secure as long as you don't give many distinguishing hints away as to your actual identity. Too, someone would have to want to read you :-)

I liken it to when I lived in a high rise apartment building and was afraid someone would break into my apartment and then realized unless they already knew me, they weren't likely to pick my apartment at random.

Even personal things one says aren't "meaningful" to a stranger. It's like when you're in a car and see someone in another car doing something embarrassing. It entertains you but you don't know them and they don't know you so it's just a good reminder that cars are "public" not private spaces to some degree.

The Web's the same way as the "real" world. Just about anything and everything is out there somewhere, but who cares? :-) People out to get you can do so with or without a blog.