Intelius.com Article:

If you're looking for a person, you can't go wrong with Intelius. Intelius offers comprehensive people search, updated daily, which is accurate and fast.

You can search for people by email, across social networks, through property records, and more - including phone reverse lookup.

Intelius is very useful for carrying out background checks, employee screening, and criminal record searches. Additional features include Intelius Premier and Intelius Identity Protection.