Looks good. I wonder if there'd be any interest in combining with my side project, which is a search engine for user-submitted personal and independent websites (and also search as a service). I could do with a nicer user interface and more structured data like yours, and perhaps you could benefit from features like user-submitted sites and scheduled (plus on-demand for verified sites) reindexing. Details in my profile, with links to the (open source) code on the site.