QQ 有用處。我也被QQ了。但是qq又似乎是流氓的代名詞

實名的QQ又沒人氣。同學為幾十年如一日一次聚會搞的群，事後就人走茶涼。
FB也不過是網絡時代的工具之一罷了。活不活的下去還難說。我也被FB了，often receive their email reminder about what is happening :)

There is already FB fatigue syndrome.

說到底，這些東東都在搶 advertising dollars which is alway ~2% of 雞的屁。