Bing has released its first set of webmaster guidelines which gives importance to content, links and social. Although most of the search engine optimizers already give importance to these three factors and use them to make their website more relevant and search engine friendly. But thanks to Bing, webmasters would feel it easy to optimize their websites for Bing.
You can have a look at Bing webmaster guidelines here:- http://www.bing.com/webmaster/help/webmaster-guidelines-30fba23a