Justin and Selena are Social Networking Superstars

#4 Justin Bieber

Twitter followers: 26 million
Facebook fans: 45.8 millionBieber owes his fame to social networking. He was discovered on YouTube and the young singer never

forgets his fans. He retweets them and posts notes from

 his travels and photo shoots. His Facebook page is mostly used for his latest videos and to promote things

 like Playbutton, an album on a pin.

#10 Selena Gomez

Twitter followers: 12.3 million
Facebook fans: 33 millionGomez is no dummy. She uses the power of her social network to promote Postcard On The Run, a

 company she’s an investor in that has an app that lets you turn iPhone photos into snail-mail postcards.

 It’s nice for fans though because it means the young pop star posts photos from her vacations and tours

 including some with her boyfriend, Justin Bieber.