I recently revisited Nielsen//Netratings' website for an update on search engine market shares.  The latest report , using figures from November 2006, show that things haven't changed much in the last six months:

• Google - 49.5%
• Yahoo! - 24.3%
• MSN - 8.2%

All the other search engines get to fight over a meagre 18% of the search market. Even so, with over 6.2 billion searches in the US through November 2006, there's still 1.2 billion searches they can claim.