You know who they are: The friends who can't take a bite of their meals without first snapping a picture. Who've photographed more sunsets this week than you've probably seen this year. Who clog your Twitter feed with sepia-toned shots of their pets, coffee cups, and scenery from their morning commute.
We know. But rather than unfollowing the Instagram addicts, tweet this infographic their way. But don't be surprised if they don't take the hint—or, well, if you end up joining the photo sharing party.
