One heuristic is to connect a person's name to other identifiers, such as email addresses, phone number, web domain, whois, unique user name at any popular site

One heuristic is to connect a person's name to other identifiers, such as email addresses, phone number, web domain, whois, unique user name at any popular site, university affiliation, etc. Then search for each one, and perform some map/reduce on the results for each search. I will take a look at Stack Overflow Careers, btw.