Specifically, the *client* querying an "error server" for alternate URLs based on the URL resulting in a 404. Not as obvious as a simple 404 page. I guess your 404 request supplying such alternate URLs isn't good enough. On Wed, May 7, 2008 at 1:19 PM, Ralph <kesselr1 at mchsi.com> wrote: > > Apparently Amazon has a patent on 404