engine - 8:52 am on Sep 15, 2010 (gmt 0)
I'd like to see more of a balance between the search engine traffic. I've seen Google's 'power' in search destroy businesses when they drop out of the SERPs. It happened because there was no alternative. If there was a 50/50 split, or 33/33/33 split, it'd be much better for the business.
However, between the search engines, i'd be surprised if there was any more general search traffic to be gained. It's about share of search.
You search on B, G, or Y, that's it.
The additional traffic has to come from new markets, or from new ways, such as FB or Twitter. These people are not searching, so would never have come from B,G or Y in the first place.