Noting that Jagger brought back the ability to have spammy links knock sites back in the SERPs, I'm having a very hard time resisting asking some friends to give it a shot on a particularly hated competitor.
After that, he gets support from the forum - telling him to hold tight and be strong. Do not succumb to temptation, good will always prevail over evil. Yada yada. :)
Anyway, it turns into a fun thread, so if you got the time, check it out.