title: Wrong picture/thumbnail when we paste the link to our post from our blog
body: <p>We run the blog Tracasseur <a href="http://www.tracasseur.com" rel="nofollow">http://www.tracasseur.com</a> and been doing it for 4 years. We have the blog at Blogger. Always when we post the link to our latest post on our Facebook page <a href="https://www.facebook.com/tracasseur" rel="nofollow">https://www.facebook.com/tracasseur</a> the right picture from the post has been chosen. But suddenly the other day it has stopped working. Now Facebook only give us the opportunity to choose between 2 pictures that are not included in the post, but they are on the blog in the right column. How can we solve this problem? And why has this problem suddenly occurred, we haven't changed anything?</p>