keyplyr - 1:41 am on Apr 22, 2013 (gmt 0)
Just a FYI - about a year ago, when the Google Preview was being discussed, I tested blocking the Google IP range that I had determined to be Preview, etc. The site I tested on dropped in human page loads by 20% to 30%. I removed the block and the site returned to normal traffic shortly thereafter. Conclusion: IMO users like the fact they can see that preview, or maybe they think something is wrong if they don't.