Here are some interesting insights from Duane Forrester, who is a senior product manager at Bing.
http://www.stonetemple.com/search-algorithms-and-bing-webmaster-tools-with-duane-forrester/
Two of the biggest things of interest are:
- The huge weight placed by Bing on user interaction with the search results as a ranking factor. This was amazing stuff. Basically, Bing is willing to test any page by indexing it. In fact you can pretty much directly inject any URL you want into their search results using the Submit URL feature of Bing Webmaster Tools. Then they will test it, and if the click interaction data is bad, out (or down) you go.
- The ranking of the priorities for publishers in Duane’s eyes. #1 Content #2 Social Media #3 Links. Links were rated as the third most important area. Third.
The article is very easy to read, with the highlights put in front. This is recent information from a couple of months ago.