It gets over a million and a half viewers a week but you won't find it on TV. Newsbeat's been on location with Kate Modern which goes out on social networking site Bebo.
The star of Kate Modern is Ralf Little. He plays Gavin but isn't sure if it's a great career move or not: "The chance to be here right at the start of it is pretty exciting. So it could be a big waste of time or I could be a pioneer."
