"system allows users to direct a message to people who fulfill certain criteria without necessarily knowing recipients' e-mail addresses, or even their names."

"system allows users to direct a message to people who fulfill certain criteria without necessarily knowing recipients' e-mail addresses, or even their names." No, thanks. Too many emails for the receiver, too uncertain for the sender. If I want to send an email to the "CEO of Pixar", I just put this string into my address book. The most interesting thing for me is how they get that data exactly. Disappointingly, that’s not in the article.