There is a large thread at the Bing Community on the topic of how Bing treats domain names. There are some people that feel that Bing's algorithm weighs too heavily on words in a domain name.
Cleo started the thread, which now has about 30 replies, even from Brett Young of Microsoft. Cleo said:
If I have one criticism of the Bing, it is that it puts WAY too much emphasis currently on keyword domain names. Like for example, if you made bread and had a website named www.bread.com, it would rank really high with Bing. However, the actually quality and content or even code of the website may be terrible. It may not even be related to bread, but the people at Bing put way too much emphasis on just the names alone...
In the past and present, it has been a major source of abuse/keyword stuffing.
Two things I find interesting in this thread.
(1) The topic of how valuable a domain name is in the eyes of Bing. Clearly this is up for debate and anything you see today, can change tomorrow.
(2) How a site was sent to the spam team for review after discussion in the thread. Yes, you may be able to expedite spam reviews if you complain about specific sites in the Bing community.
Forum discussion at Bing Community.