Medical, legal and tax questions
These (potential international) questions might have the ability to provide an external "expert" credentialed and/or licensed professional to respond appropriately. Effectively, questions in those three categories may have very different responses based upon the country origin(s).
It would be problematic to direct generic responses to strictly a US-based answer. I would feel much more comfortable providing data into something that had a flag system denoting novice, professional and/or expert responder.
Why? Because the Internet really IS fully of bad data... and some of us have worked our entire lives to make it better.
Pulkit Sharma commented
Thats right. I am public accountant and answer most of the question at knowyourgst. Tax is my domain.
Bing can direct scan country specific websites, how Google does.
Whenever we search country specific queries most of the time answer is related to USA tax laws.
Bing bots have to be more smarter!!! Or atleast give users option to answer country specific matters.
This doesn't have to be one-on-one, so much as it has to be verified data from vetted sources related to the question being asked. A tax question can be answered through, for example, an Intuit FAQ search, if Microsoft partnered with Intuit to index their data on TurboTax, including their consulting service. Legal Q&A? Avvo or some similar resource - as long as it's vetted and highly regarded, instead of presenting a search result, it can just provide the short form of the answer as it does with time zone conversions ("what time is it in tokyo?") and perhaps a link to "need more details? Talk to an expert," which would point out to the reliable partner.