Is Facebook envy real?

Facebook hit a billion users this year, which means even more pictures and posts crowding news feeds. But research suggests those constant images of positive moments in people's lives are making some users feel inadequate even jealous.

It's long been human nature to draw comparisons to others but Facebook envy? Focus @ 4 we'll explore the possible dark side of the often-sunny digital world of sharing Friday. Tune in, and share your thoughts.