A major change to the way you search the web is about to unfold right there in your Google search results. The company is going to begin privileging content your friends have interacted with.
Search Engine Land explains:
In some cases, Google will simply be annotating results with a social search indicator, says Google's Mike Cassidy, Product Management Director for Search. Google's traditional ranking algorithms will determine where a listing should appear, but the listing may be enhanced to reflect any social element to it.
In other cases, the social search element will change a page's ranking -- making it appear higher than "normal." This, I should add, is a personalized feature based on an individual's relationships. The ranking impact will be different based on how strong your connections are, and different people will see different results.
In some ways, this is a further extension of Google Personalized Search, even though it is separate from that.
Read the full story at Search Engine Land.
UPDATE: Google emailed to note that they do not currently use Facebook likes in their social search data, but if I had to guess, I'd say it's only a matter of time before they do.