Msg#: 3442381 posted 10:56 am on Sep 7, 2007 (gmt 0)
It's probably worth looking at the thread strange referrer activity [webmasterworld.com] which includes a reply from an MSN rep.
Unfortunately, the spider resulting in the adult terms you see is not the Live search engine spider (indeed, it does not identify itself as a spider at all). Your only solution if you genuinely don't care about MSN referrals is to block the IP addresses used by this 'test'.
The suggestion in the thread I mentioned is that blocking this activity could result in you dropping out of live results entirely, but you probably have a better chance of staying in the results and still blocking the unwanted activity by banning the IPs, which I imagine would be the best of both worlds.