From AdSense help page:

Site-flavored search is an optional feature of AdSense for search that lets you customize your search results to be relevant for your site. When you use site-flavored search, our learning technology will flavor your search results to be more customized to your site’s themes and topics.

For example, if you have a site about music, site-flavored search may over time begin to understand your topic and influence your search results to be more music-relevant. However, the learning technology used in site-flavored search takes time. You won’t notice any changes overnight, but gradually your search results should become more relevant to your site.

I’ve been using the term “web realms” to describe something approximately similar to this. Another way of looking at it: when you search for something and when I search for something, we get different results based on who we are and what our data profile indicates that we are all about.

{Connect this concept to augmented reality & free-floating graphics, and you eventually have the end of consensus reality - if such a thing ever even existed in the first place.}