Along with the Internet's "information overload" has come the vastly expanded ability of people to contact other people. Now, anyone can email anyone in the world. And with email signatures containing contact information, or by asking someone to call you, more and more people are getting your phone number and calling you.Email is very democratic; it doesn't distinguish between your mom, your employer, or a random press release sent from some organization 3,000 miles away. Sure there are ways to filter emails, but they all come to you in some capacity. There isn't yet a sophisticated way to filter out...