Seems to be around 83-84%. http://www.statowl.com/search_engine_market_share.php http://marketshare.hitslink.com/search-engine-market-share.aspx?qprid=5
Roughly the same data as I heard, I think it is hard to estimate since the chang is the most common thing in this internet world!
I just saw: http://googlesystem.blogspot.com/2009/03/googles-market-share-in-your-country.html Its about 63% in the U.S. ..... however over 90% in countries like the UK and France
I am in the UK about 85% of my traffice is google then 5% for both Bing and Yahoo with 5% for all the other engines
Geez, that's a crazy range. I've read a lot of different stats. Based on what I've seen. I'd say Google is at about 70%. Between Youtube and Google, they are about 10% of ALL the internet traffic.