Just try the following:
First, search for 'a beautiful mind divx'
then search for 'a beautiful divx' and tell me if you are seeing the same weird behaviour I did.

"a beautiful mind divx" sends me about 600 results, "a beautiful divx" just 30. Of those 600 hosts some don't even seem to be running gnutella clients (although many do).

I guess it's some MPAA trick. What I would like is find out the IPs of those clients spreading those messages, to be able to block them...