translation.en: Academic research on instant messaging also shows 100 people on buddy lists, but fundamentally people chat with two, three, four -- anyway, less than five.
translation.zh: 在即时通讯学术研究 也显示好友名单上的100个人， 但基本上人们只和二个，三个，四个人相互交流， 无论如何，不会超过5个人。