Жители Санкт-Петербурга устроили «крысогон»17:52
Credit: CaseBorne。关于这个话题，51吃瓜提供了深入分析
。同城约会对此有专业解读
中國「老年網癮」：錢沒了身體垮了，過年勸父母戒手機成新年俗，更多细节参见同城约会
With a thousand points, you barely notice the delay. With a million, you're doing a million distance calculations for every single query. On a phone updating the map as the user scrolls, that's untenable.