Apparently I've already done this once

Yesterday I was inspired by my Shelly-friend to start a blog. I've been thinking about it for a few days now, and I finally decided I was gonna give it a try. As I tried to create a username and password, it kept telling me that I already had an account. I racked my brain trying to remember signing up for a blog, but for the life of me I DON'T REMEMBER! It insisted that I couldn't use my same email adress for a new one so I tried all of the password combinations I could think of, and finally it let me in.
Somewhere along the way I think I lost my mind. How do I not remember signing up for this and posting? I DID find out that my account was created in October 2007. It doesn't help to know that I did it less than a year ago. At least if it was done back in 2001 I could understand how I might forget =).
I guess the good news is: I don't have to think of a clever title, I did that a year ago. At this point it doesn't even matter if I like it, because well, it's there to stay now.