bingdude - 8:34 pm on Jan 31, 2012 (gmt 0)
As with so many thing, we constantly test new ideas to see if they resonate with the general search population.
Folks have to keep in mind that Bing is a decision engine, focused on "task completion". We've stated this from the outset, so trying things like these types of tests help us determine if this type of SERP behaviour strikes a positive or non-positive note with searchers.
For exmaple, I did htis search on "gout" today and get sort of a version of what was described earlier in the thread. Not the whole article, but part of it, with a "click here to read more" option.
SERP example: [bing.com ]
...and yes, we partner with those providers, who then supply the content.