It turns out that the custom search engine that I have created on Google for the blog has its own Google Co-op - Home Page.
It has struck me that I could also create a custom search engine for my blog roll. That might be interesting.
I have also just thought of a better way to display search results. I created a dummy post for back in January 2005 and put the result display code there. I think that works better than pasting it over the homepage.