![Norbert Finds and Verifies People's Email Addresses with Their Name](http://i.kinja-img.com/gawker-media/image/upload/s--Jg4dufpf--/h49rajfdglsvzrom71aa.png)
Via Lifehacker ...
http://www.voilanorbert.com/
Norbert offers a simple interface, and you don't need to install a plugin to use it. The second you search for someone and turn up an address, Norbert checks the mail host to confirm that the address exists.