I was looking an answer about this all over the internet - and none of them helped me..
So here's the thing - when you press Facebook "LIKE" button on my blog, if there's no text in the post, below the link Facebook writes "You may use these HTML tags and attributes: ", and FB chooses random picture from my post to show as thumbnail.
I was trying many ways to fix this and all I got - Facebook thought that my testing (LIKE/UNLIKE) is spam, so it added CONFIRM box before like..
Anyway, here's my blog - http://guli.lt/
You can try for example to like AUTHOR, or some other posts, that doesn't have any text.