QQ 有用处。我也被QQ了。但是qq又似乎是流氓的代名词

实名的QQ又没人气。同学为几十年如一日一次聚会搞的群，事后就人走茶凉。
FB也不过是网络时代的工具之一罢了。活不活的下去还难说。我也被FB了，often receive their email reminder about what is happening :)

There is already FB fatigue syndrome.

说到底，这些东东都在抢 advertising dollars which is alway ~2% of 鸡的屁。