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Answers and rating deltas for

How websites like Facebook are protected against bot without any captcha

Author Votes Δ
Alex Novikov 5 +4.06
Csharp 1 -1.58
Jaime Ivan Cervantes 1 -1.22
Dion Pezzimenti 1 -1.27
Julie 0 0.00
Andrew Whatever -1 0.00
Last visited: Sep 14, 2014, 5:07:29 AM