QQ图标熄灭：
http://kf.qq.com/faq/120322fu63YV130422MjEriY.html
Facebook注销：
https://ssl.facebook.com/help/contact.php?show_form=delete_account
http://jingyan.baidu.com/article/ad310e808911aa1849f49e2f.html
http://jingyan.baidu.com/article/4f7d571283e24a1a20192718.html