There's a sidebar on your blog and it too is a blog. But it's simply a list of links. And the list is powered by your visitors. They stop by and, like a coin in the metal box at the cathedral, leave you a link. The metal box in this case is a text box with a 'Post it' button. No seperate pages, no passwords, nothing else. The page refreshes and the link is added instantaneously.
(I kinda like the cathedral metaphor, because the donations benefit all future visitors)
I'm sure this is a quick scripting excercise, but is anyone already doing this, or does the script already exist?