Mostly people do SEO than they did not think sites other than Google, Now a Microsoft is behind Bing so what you say about it for our online business. Because Bing change its search engine optimization. Whats your opinion share here....
I don't like Bing - all the work I did to get noticed on Google was wasted on Bing - I didn't get first page never mind no. 1. The sites that beat my site were completely off the topic and I couldn't even figure out why they would get in front of my site which had the key words in the domain name. I tend to just ignore it but I suppose I'll have to do something about it eventually... I'm waiting to see if it gets popular or people just stay with google.