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Question

I am using Facebook comment plugin. When i am trying to write comment it always giving me below message

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Answer 1

This occurrence is possibly/probably related to the "like changes to confirm" button type behavior: Facebook like button is asking to confirm the action which may imply some type of auto "anti gaming the system" measure has been imposed [hopefully temporarily] on your site... –

Answer 2

Your link url got blacklisted. Facebook asks to prove user the post on his wall