Findermind: links to 25 free people search
engines. I tried KGBPeople and the Bing-powered search of Facebook failed
to find my account. (Bing also downgrades me compared to Google.)
USA People Search:
pretty amazing. But detail requires subscription.
Google Scholar enables you to search specifically for scholarly literature,
including peer-reviewed papers, theses, books, preprints, abstracts and
technical reports from all broad areas of research.