Any volatility in search results sets off tremors in the search marketing community, for it usually signals a change in the Google algorithm. There have been many significant updates as Google continues to search for how to deliver the best set of results to its users.
The most recent shift has been dubbed “Valentine’s Day Update.” Many of its predecessors were named Panda, Penguin, Pigeon or, more prosaically, Medic and Fred. Each targets a specific search problem — bad links, duplicate/thin content, aggressive monetization, etc.
