This is not entirely surprising. If you take Yahoo's share of the market and add Microsoft's own pre-existing share with Bing, you get to about 30%. The questi

This is not entirely surprising. If you take Yahoo's share of the market and add Microsoft's own pre-existing share with Bing, you get to about 30%. The question is whether or not their share increases any further. My guess is probably not. It's not that Bing is any less useful than Google - it's just that it's not really more useful. As such, there isn't much impetus to switch over.