MSN Search, being the newest of the big engines, is still trying to get a handle on search spam and had been slowly chipping away at it, but the problems are now getting worse since the switch to MSN Live.
In particular, MSN’s duplicate content algorithm penalties are too sensitive and too severe, causing a simple hack to be an effective way to remove a competitor’s site from the rankings. Let’s hope MSN fixes this right away and even takes notes as to who threw up content hoping to exploit it once it became known.
Credit to ThreadWatch for the find.