Nice work.

This would take some work (more on the server's part than yours), but I think it would be more accurate if you tested the links for 301 redirects and consolidated the results accordingly. For example, in the ASP.NET tag one of my pages has 112 links to an older URL (http://encosia.com/2008/05/29/using-jquery-to-directly-call-...) that 301 redirects to a newer URL (http://encosia.com/using-jquery-to-directly-call-aspnet-ajax...) which has 129 links itself. It would be interesting to see only the latter URL show up in the list with 241 links.