Hey Guys, I think Google caffeine is like it saves the result in local browser and again while searching the keyword it shows on top result...is this the same or something else...
It is totally different that what you assume here. They have changed some core algorithm in calculating ranking for SERP in Google. It is not the personalized search results.
Its the new, upgraded version of Google and it will improve the speed, accuracy, size, and comprehensiveness of Google search, mostly how the way google indexes.