lucy24 - 10:52 pm on May 18, 2011 (gmt 0)
What happens if you redirect them to a nonexistent page in the originating domain? Any humans clicking on the link will come away thinking that the person who put up the link is an idiot. Which ::cough, cough:: appears to be really true. Will outside entities (such as g###) get mad?
Incidentally, you can be offensive without being, well, offensive. In the analogous case of a redirected hotlink, I've got a green-and-magenta image on a black background. Small filesize, big picture. The unwanted links never last long.