internetheaven - 4:24 pm on Dec 28, 2010 (gmt 0)

I'm hoping that a "false positives" period after any particular change isn't too extreme.

It will be. It always is. I'll have to avoid webmaster forums for a few months once this kicks in as there will be the usual deluge of people screaming and crying to no avail.

P.S. Google: I currently serve different content to Googlebot on several sites. That's because Googlebot tends to come from a US IP address and my content is altered depending on what country the visitor is coming from. The ads change, some of the links change too. It's called "providing a better user experience" ... you will undoubtedly call it "cloaking" if the IP addresses you use to check my sites conflict with my database of geo-ips ...