This is unlike Apple's FaceTime ads, which also play on the same emotions, but that ad succeeds because it's set inside the human world. Facebook tried something similar with Places (http://www.youtube.com/watch?v=ZfX_ZQag1BM), trying to connect the technology with very strong emotions, nostalgia, etc. They did show a lot of real life scenes, but I think it also failed. They're selling the idea that Places helps you have serendipitous meetings with your "facebook friends", i.e. casual acquaintances you generally don't share those kinds of strong emotions with. It's completely incongruous for Facebook to try to brand itself around what are fairly private emotions that you usually reserve for only your most intimate relationships, especially after basically forcing everyone into public mode and declaring privacy dead.