Co-workers, Friends and Readers

I recently had a co-worker mention that they read my blog and they like it.
That's cool.
It's also a little interesting... I didn't expect that this website would remain a secret or anything. A few of my friends know about it, and when anyone asks about it I don't avoid the topic. But there is something a little unsettling about having a co-worker read some of these things.
I have a tracker on this site which tells me data about each visitor to the page. I can find out all sorts of things about you -- where you live, what kind of computer you have, and even some of your web browsing habits. But it doesn't tell me who you are.
I put myself out there on the page and don't expect anyone to sign in or sign up. I don't have a guest book for people to record their visits. I offer a place for comments, but it's certainly not required. The point is, I don't really know much about my reader, but they know about me.
It's true, I don't write much, if anything, about work. I almost avoid the subject entirely; it's just not the point of this blog. And that is a good practice, since I'd like to continue working at that place.
Basically, the reader's benign complement ended up as a reminder that people do read what I write, and that I should be careful about the kinds of things that I post. And that's the reality of the world around me.