xcoder - 9:37 am on Nov 19, 2012 (gmt 0)

Well it could be possible, but remember the entered search strings are not allays the same, from 100 visitors 80% have different search strings entered, it would need quite a research to know what keywords are related to our site

Well not really. Googel hold quite extensive search history for each and every website, including keywords, going a few years back, ...

I see Google bot often entering search keywords in some of my websites search box and carry a search.... very common actually.

They cache and store everything via their numerous spyware tools, including user interaction over your very own website.

[edited by: xcoder at 9:56 am (utc) on Nov 19, 2012]