When I post a comment through a webpage I created, Facebook tries to retrieve some images from that particular page and chooses a thumbnail to the the post as it wants. How can I choose the image of this thumbnail?
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When I post a comment through a webpage I created, Facebook tries to retrieve some images from that particular page and chooses a thumbnail to the the post as it wants. How can I choose the image of this thumbnail?
You should use facebook open graph meta tags.
Don’t forget that you need to have your html tag looks like this:
Also here is (at davidwalsh.name) a nice article about this topic
And as written in this answer: the data could be cached by facebbok, you could check it by the special facebook debug tool here: http://developers.facebook.com/tools/debug