This TED Talk by Renny Gleeson is called "Busted! The sneaky moves of anti-social smartphone users", and it is so very, very true. It brings into focus the issue that I battle a lot, especially as a new father, which is, "Should I be living this moment to the fullest, or recording it to share with others and relive it myself in the future?" With the ubiquity of recording devices, so many people are experiencing so many important events in their life watching the LCD screen of their device as they record the event. The photo in the video from the Obama inauguration gala is one of the best representations of this I've seen.
The answer is, of course, the frustratingly meaningless word: moderation.