I just listened to Stack Exchange Podcast #20 where Joel and Jeff talk about the problems with duplicate questions and how Joel would prefer a single good canonical answer that duplicate questions can be pointed to. The problem with Facebook questions is that there are a ton coming in but very low view count, and even less flag count so I am asking for help in getting the necessary votes to clean these up.
The biggest problem question is "how do I set the thumbnail image for my page?", with a slight variation of it being "why isn't my thumbnail image updating". I need the community's help closing these as duplicate. Here are 25 duplicate questions pulled from the first 3 pages of Google results (there are lots more though):
Best duplicate target: How does Facebook Sharer select Images?
List of duplicates: (feel free to update this list or remove entries once they get closed)
Image MEta Tag Not Showing Up in post Facebook Like Meta Tags not showing Images Like button on my site publishes a picture that I didn't want to correcting FB meta tags Facebook Like Meta Tags not showing correct image Facebook like not extracting right image from meta tags Help with the order of og:image meta tag Facebook Like Meta Tags not showing correct image How to set image, description and title for each facebook like in a Wordpress blog page? Facebook like - showing cached version og:image, way to refresh or reindex it? Facebook Connect Debugger and site won't use Meta Tags Problem defining og:image path for php-generated Open Graph meta tags - product images don't display when Facebook Like button is clicked Want custom title / image / description in facebook share link from a flash app Facebook sharer.php, how to have multiple og:image tags? facebook share button with custom title, description, and image Facebook share url thumbnail problem Using Facebook's Open Graph protocol, are multiple thumbnail images allowed? Facebook image sharing problem image-tags for google or facebook Facebook "Send" button picture not showing Facebook will not display the image from my page as a thumbnail, when posting it on my status Facebook Like Button: specify graphic for this page? Facebook SEO with image not loading Like Button: Make Facebook NOT take specific images What does og:image meta data do with the Facebook Like iframe? Facebook like button - image not shown on news feed og:image won't show up in my Facebook feed connected to like button on my site og:image won't show up in my Facebook feed, when I like stuff at my site Facebook same meta tags worked on one host and not worked on another OG Image not being displayed in Arts and Entertainment page Can I make a change to my website to nominate an image to be used by facebook? Auto Update image of a shared link on fan wall Like button results in odd image on wall post Facebook Like button - fetches "wrong" image Control the image that facebook shows when I like a URL How to chose custom image that will be shared on facebook after liking a page? Update on adding custom image to facebook share How does facebook know what images are needed to get from a URL? Facebook sharer won't embed image in IE facebook won't show my oh:image thumbnails no matter what I do http://facebook.stackoverflow.com/questions/5173900/facebook-open-graph-displays-image-even-though-picture-parameter-not-sent http://facebook.stackoverflow.com/questions/7402751/providing-a-set-of-images-to-use-as-thumbnail-when-sharing-a-url http://facebook.stackoverflow.com/questions/6704000/fb-share-and-picture-problem http://facebook.stackoverflow.com/questions/1558802/how-do-i-control-what-images-facebook-attaches-to-the-feed-story-when-my-website http://facebook.stackoverflow.com/questions/7352687/how-to-tell-facebook-what-images-to-offer-a-user-when-posting-a-link-to-my-web-pa http://facebook.stackoverflow.com/questions/6042502/how-to-control-the-picture-that-shows-in-facebook-when-somebody-likes-your-blog-p