Don’t you mean a lack of anonymity? And sure a lot of personal blogs are about vanity, but a lot of them are also about communication. The best thing the Internet has provided to humanity is the ability it gives people to quickly, easily and cheaply publish any kind of content to a wide audience.

I understand your reasoning for writing for yourself. But if you are truly writing only for your self why bother to make it public? I keep a small wiki running on my computer where I make notes similar to some of the ones you have posted here. I use my blog to tell my friends and family things that are happening in my life or things that I am thinking about like new technologies. Things I might not otherwise bring up, or things that I want to tell a larger group of people about at once. It’s a lot easier to make one post about Podcasting than to tell you, then tell Alex, then tell Andrew and so on.

As for searching, people find my blog with some strange google searches as well. It’s fun to look at referer logs and see the crazy ways people end up on one’s blog.