Google's home page has a unique logo each day for a different Olympics pushing searchers to their Olympics results. Google's head of search, Amit Singhal also posted on Google+ about the olympics results.
He wrote:
Check out the wealth of Olympics information available in Google search.
Google has their knowledge graph tailored to bring back results about the Olympics in general or about the players, events and sports. Here is one picture:
Danny Sullivan spent the time comparing Google to Bing to Yahoo and gave Yahoo the gold. Dan Barker dug a bit deeper into the Google Olympics results.
I did hear some complaints that Google's Olympic results are a bit too much delayed.
Forum discussion at Google+.
