Conan O’Brien decided last week to pick Sarah Killen as the only person he would follow on Twitter, turning the 19-year-old’s life upside down. O’Brien has amassed more than a half-million Twitter followers.

Conan O’Brien decided last week to pick Sarah Killen as the only person he would follow on Twitter, turning the 19-year-old’s life upside down. O’Brien has amassed more than a half-million Twitter followers.
