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Possible Duplicate:
How does Facebook Sharer select Images?

My site publish a link to every user profile page into my FB fan page wall

Every user has a default avatar, when a user update the photo, the avatar is replaced by the uploaded photo. But on the Fan page wall, the image doesn't update, why? In user page i correctly create the image tag with the image url, like this:

 <meta property="og:image" content="http://ia.media-imdb.com/rock.jpg"/>

This is a link with default photo: LinkWithDefaultAvatar

This is a link with user updated photo, but from FB wall i see the default photo again;maybe Facebook store the link content posted previously instead of retrieve the new image?

LinkWithUpdatedPhoto

thanks

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Marco Casiraghi
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    I don't think FB will visit your url every time it gets loaded on Facebook page wall! I guess once the url is posted on FB it's stored that way. – ifaour Apr 28 '11 at 19:48
  • yes ifaour is correct. publishing to wall, the info is permanent and will not change even if you update your OG meta properties. However as an additional info: when a user likes an OG page, it gets posted on his wall as "Name likes a link", that kind of post gets updated together with OG properties, like image. – dragonjet May 07 '11 at 03:31

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