Well, that and there's nothing that really provides places where new relationships can form casually. FB is a tangle of little fiefdoms, with little opportunity

Well, that and there's nothing that really provides places where new relationships can form casually. FB is a tangle of little fiefdoms, with little opportunity to expand your personal circle except through existing connections. This is quite limiting. The polar opposite is something like HN or Reddit, which is all casual contact with random people, albeit those who are likely to share our interests. This allows for often more fulfilling discussion than what our immediate circle of friends can provide. It's why we're here rather than on FB or G+ right now. We humans have always liked marketplaces and pubs in addition to private venues.