I did a three term search. Three of top ten results were site search results for those three terms from Amazon, Walmart, and Sears. Try some searches. I've seen this before, but this is ridiculous!
Google's index is going to get very big! I wonder if someone is out there publishing lots of links filled with search terms to these various major vendors?
Of course Amazon, Walmart, and Sears should block this but, come on Google, how bad is it going to get. This should be trivial for Google to prevent.
It's going to be very hard to compete if the Google's search results are flooded with ? site search results ?