I thought I'd mention that these guys have started making WHOIS history available for free and it's getting picked up by Google. Their model appears to be to monetize by making people pay to get data removed. Currently it's $39.95 per domain to remove data for each domain.
http://www.whoismind (noPRforscumbags) com/delete-history.html And they are also trying to sell WHOIS protection as well for $14.95
http://www.whoismind (noPRforscumbags) com/protect.html
I figured it was just a matter of time until some scumbag decided to use such a model to extort webmasters. There are already some complaints around the web:
http://www.ripoffreport.com/www-whoi...rnet-E1C1F.htm
You might want to double check that you have your WHOIS in order. I think they only have historical data for the last few months so you may as well not give them anything.