Facebook's megaphone-like approach to sharing makes it less than ideal for more private missives. Sharing private images or jokes with select people is something of a test of nerves. One slip of a drop-down menu, and your intimate photo could go global, rather than just to your "mates" privacy group. But, Facebook wants you to share in anyway, and to anyone you like with confidence it seems. According to TechCrunch, the social network's working on a "Moments" mobile app to help. Once again, Facebook would be taking a single-focused idea out of the main mobile app into a standalone one if sources are correct. The Moments app will reportedly use a visual, tile-based interface for you select the group or sub groups of people you wish to share your -- we assume -- moment with. If this sounds a lot like Google+'s "circles" mechanism, that's because it does. There's no word when Moments could find its way onto phones, so for now, you'll just have to run the gauntlet with current tools to avoid having your mom comment on bachelor(ette?) party photos.