In an "about time you did that" move, I have added an e-mail form to Freshblog so that if you want to reach me without leaving a public comment, you can. It is mighty lo-tech, but I think it will work. So e-mail me, why don't you? (It'll pop-up a new window, because I was having difficulty making the ads go away after submission if I kept it in the same one....)
I like the basic idea but why are you relying on geocities for storing your comment.
Maybe create a post in your main blog itself with a 1995 timestamp or create a new blog.
And you can directly provide a link to post a comment. Users get a standard interface and don't get to see the irritating geocities ads.