Afterhavingmorethanafewacquaintances(相識的人)online,itmigh...
問題詳情：Afterhavingmorethanafewacquaintances(相識的人)online,itmightcomeablowtokeensocialnetworkerslikeBarackObama,orevenFacebookfounderMarkZuckerberghimself. Accordingtoaresearch,theaveragepersonh...