Super idea, Simon! We have been promoting this kind of idea over a SEOBy.org for the past couple of years, but we have been taking the approach from the
SEO point of view. It would be so nice to submit a site listing once and once it was approved have it picked up by many search engines and directories.
Now that we own 3 search engines and several directories, perhaps we can find other site owners that would like to see what a large number of small sites can do if they can become organized...?
I nominate Simon to be the initial leader and I will help in any way that I can....!