More generally, they're having a 'plaza problem', where a universally-shared space, with too much visibility of bulk and differing-tastes content, creates scali

More generally, they're having a 'plaza problem', where a universally-shared space, with too much visibility of bulk and differing-tastes content, creates scaling problems. There's a good discussion of this concept of 'plazas' and 'warrens' in social software (originating with Xianhang Zhang) here: http://www.ribbonfarm.com/2010/10/27/warrens-plazas-and-the-edge-of-legibility/ http://www.ribbonfarm.com/2010/10/27/warrens-plazas-and-the-...