well it's easy.when you click on their name. you will see a green button above their name and it will appear green. when it's not green that's mean that they are not online that's all. a_a

是呀，会员档案上还会显示“当前在线”的，如果在线的话。

每个会员的名字前都有一个点，如果是绿色的表示在线，灰色的表示不在线