xcoder - 9:34 am on Nov 1, 2012 (gmt 0)

I'll bet they probably mark viewers with "buy" intent long before they even reach our sites, based on viewer recent browsing history and search keys (remember they have eyes almost everywhere nowadays).

They then serve SERPs loaded with ads and flooded with goog properties. Viewers with "buy intent" don't get to ever see (or hardly get to see) your page in the SERP unless you are a paid Goog customer...

Something along these lines...

very hard to prove something like that and THEY KNOW THAT. Hence the reason they now omitt the search terms from the referrer string. Only paid customer (adwords) get to see the search terms... cleaver really.

[edited by: xcoder at 9:45 am (utc) on Nov 1, 2012]