My comment was in response to: "the problem of putting together complete strangers with shared interests and coincident physical locality really hasn't even be

My comment was in response to: "the problem of putting together complete strangers with shared interests and coincident physical locality really hasn't even been attacked except in very constrained use cases (i.e., dating services)." When clearly Meetup have both attacked and been very successful in "putting together complete strangers with shared interests and coincident physical locality". That's exactly what they do, would you not agree?