I
posted about this a while ago (still have the old cartridge sitting here under my desk). I figured Canon had just abandoned the program after Greenpeace or Newsweek or someone had revealed they were just dumping the cartridges sent back to them in rivers in southern China.
Well, I just noticed
somebody left a comment with the new address:
http://www.ereturn.usa.canon.com/
How funny. You've really touched the heart of an old cynic. Now I can get this cartridge on its way to its new home alongside a river somewhere in southern China.