Shameless plug ... This tool returns the AOL keywords which clickthru to a nominated site. http://www.askthebrain.com/aol/www.cbs.com {if you like it ... please make the URL active ... else delete thread} Great tool for finding the keywords people type to find the specified site. For example I put in www.cbs.com and it returned the queries that resulted in a clickthru to cbs. Good keyword research tool. Generates the competitive info I am after. It uses the just (accidently) released AOL search data.
I'm working on one with some nifty search features... but it's going to take a while to get all the data loaded!!! http://www.theaoldata.com/ Anyway, if you try it, please drop me some feedback (presumably via PM) so I can add features and so on.