I have decided to add some URL parsing to SpamCopURI. I figure it will be kind of fun and should help catch a few of these edge cases that have popped up.
If a few people could email me example redirects you have seen (you may want to tar.gz them up so they don't get filtered), that would helpful in making this more robust.
I have examples for g.msn.com, ads.msn.com, rd.yahoo.com, and images.google.ca
I am mainly looking for stuff like the URL Simon sent where the spam URL is hex encoded and is buried beneath three or four redirects.
thanks,
--eric