**This is the key...no data mining and what makes the Health Vault a realistic personal health record repository...BD
Health Vault's search engine would definitely work better than those of rival sites if it could examine users' health records and past queries, and thus provide the responses that are most relevant to each individual's situation.
**But in order to attract any users in the first place, Microsoft has promised to enforce strict privacy rules. These, says Mr Nolan, would preclude such data-mining.
Sean Nolan of Microsoft explains that the business model depends on one thing: targeted search. Microsoft is betting that people will use its Health Vault Search to find out about their ailments. This service relies on an approach known as “vertical search” which attempts to provide more relevant results than generalist search engines like Google and Yahoo! by specializing in a particular field. The firm's recent acquisition of Medstory, a vertical-search engine focusing on health care, has given it a boost in this area.
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