I think I have the same issue as here, but can't quite get enough out of the answers over there.
I'm using a Like button (in an iframe on a Static XFBML page) to allow users to Like a YouTube video, with the intention that since the user clicks Like it shares it to their Wall.
What happens is that they click Like, it says "You like this", but nothing is posted, and then after a random short interval the Like button is replaced by a Confirm hyperlink.
What I really want is no "Confirm" stage because a) it's clunky and b) the user has probably left the page by then. I know there's at least one app that does it... Is this behaviour possible for me to code, and if so, how?
this is a feature of the like button, so as to avoid spamming website that cheat user on the like buttons. The "confirm" feature will be turn on for suspicious site. When your site is well received and get positive feedback, the "confirm" feature will be removed automatically.
In your case it's because you implemented it using an <iframe> - I've tried it before and the <iframe> is the cause.
来源：https://stackoverflow.com/questions/7405485/facebook-like-without-confirm