It did not take the referrer spammers much time at all to adjust their message accordingly. I just found these two entries:

06 February 2004, 0540
superbowl-janet-jackson.blogspot.com
s161-184-39-165.ab.hsia.telus.net

06 February 2004, 0408
peeping.org/janet-jackson
s161-184-39-165.ab.hsia.telus.net

Even more amusing is the local store that adjusted their marquee to comment on the boob incident and also stocked some nipple jewelry that looked like the actual one Jackson was wearing during her breasticle spectacle.