Looks like there is no competition soon. Google's share in web searching is raising slowly, Yahoo is losing share (was 20%, now 12-13% or so), Microsoft has really tough uphill battle with 5% or so. But, actually Live search is sneaking in from the back door. Live signed contract with Blackberry to provide mobile search. We know, that its default search engine in Mobile Windows smartphones. Microsoft is expecting to grow search traffic, coming from handsets. So, be aware SEO consultants, game ain't over yet.