The following search engine information was recently shared with me. I knew that Google was number 1 but not by that much. It is startling what they have accomplished in a relatively short time.
December 2010 Search Engine Market Shares
64.3% Google
18.8% Yahoo
12.0% Bing
4.9% Others
Once Google+ is up and running it will be interesting how they will stack up against Facebook. But I would bet on Google.