Forget FB 分享: 10 Reasons Why You No Longer Need It
http://lukaswzpk833.cavandoragh.org/20-things-you-should-know-about-fb-fen-xiang-snshelper
Having said that, if it's no authority for a website identify, the DNS area name method then checks its cache whether the area identify has actually been resolved currently, and if yes, the DNS domain title technique