Oh and Nikki?
1) I shortend "how often you can search" from 30 seconds to 10.
2) I added the 2 letter combos (CR,KX,RM,YZ) to the if less than 3 letter word deal (a search has to be at least 3 letters long, other wise "is" can kill the machine and return thousands of posts)
3) I did limit the number of returns on a search to 400 posts... sheez, you'd think that was enough!
Searches are the number one killer of web servers, always looking for the right compromise.