I hope I didn't miss a previous thread on this subject...
I've been getting many searches from MSN for numbers like 1132919464077. There are no such numbers on my sites but my log files indicate this is the search term. I got maybe 50 search referrers for this number yesterday.
Maybe MSN is encrypting its referral data. Any idea what's up with these number search terms?
I have seen this exact occurrence. One thing I know for certain is when you check your site's cache, it makes these numbers. Different searches make different numbers. This may be what occurs when the cached page pulls some image or css files off your server.