[ufo]

Around 90% of the searches I do are for "easy" things that any search engine should be able to find. Since I would only need to go back to Google for around 10% of the searches, if a competing search engine made the 90% case more pleasant to use would be a win for me.

[MichaelGG]

Are you sure about that? Since one of out ten searches would fail, I'd think one would quickly develop a bias and start saying "Bing never works for my searches and I always have to go back to Google anyways."