为什么别人加不了我好友？Why others can't add my friends?SOS 我加了好友，但是对方表示“ It is very strange. I cannot add you. when I go to your page I see this: Sorry, this profile has been removed or deactivated.” 而我的设置页面居然设置不了“允许别人查看我的档案”……Who can tell me why?