Eric, you may want to share your redirection resolution strategies with the 3.0 developers. I haven't heard Justin getting beyond patterns yet. ;-)
I will mention it to SA-dev once I and a few others have run it for a little while.
I am not sure they will incorporate since I have seen discussion on their list of handling redirects and generally they are not interested in doing any kind of network lookup for fear of timeouts, slowdowns, etc. We will see...
I wonder what the reaction of the likes of yahoo would be too, if millions of mailservers around the world suddenly started sending them HTTP GET requests for spammy looking domain names all the time for no reason ? :)
Regards, Simon