Help someone turn a selfie into a great group shot

You see people taking selfies everywhere. Some folks just love the angles and goofy smiles you can catch in a selfie, but when you see a group of 2 or 3 people doing a selfie (is it still called a selfie if there are three people in it?), they may really just want a nice shot.  And no one has long enough arms for that. Next time you see people struggling, offer to take the photo for them.