However, I also find that BING in its current launch version will also list many similar webpages from one company that has multiple national website domains. To the point of it being too much of a good thing. This means that one company's domains can produce indexing results which translate into webpages which could dominate entire pages of search results for key search terms..... not a satisfactory result for someone researching for information or vendors. Google does a much better job of filtering domains at this point. BING shows great promise, but the ability of one company to crowd out other results for pages and pages due to URL strategy is a flaw which needs to be addressed in Bing's early days.
Type “Laboratory Outsourcing” into BING and you’ll see what I mean. The first page has reasonably good results and is more or less consistent with Google. But then one company's national domain strategy takes over and complete pages are filled with that company's national domain site results… not good for a user searching for information or vendors. To be clear, it is not the fault of that company so many of their pages show up in BING search results... it is BING that needs to do a better job of sorting and filtering 'similar results'. See the attached results image.
Best Regards; Erik Holladay