More out of interest for how it works rather than in the expectation that I'll make any money, I've added an ad box in the right-hand-column of the site. Pretty interesting stuff really, I'll leave it there for a while to see if 1. anyone ever clicks on an ad and 2. how many people get annoyed by it (though I fail to see how you can, the ads it's currently showing are mostly for RSS services and RSS Readers...)
UPDATE (08/06/2004): To date I have made $0.59!