- Go to http://developers.facebook.com/tools/debug
- Enter the URL following by
fbrefresh=CAN_BE_ANYTHING
Examples:
http://www.example.com?fbrefresh=CAN_BE_ANYTHING
http://www.example.com?postid=1234&fbrefresh=CAN_BE_ANYTHING
- OR visit:
http://developers.facebook.com/tools/debug/og/object?q=http://www.example.com/?p=3568&fbrefresh=89127348912
I was having the same issue last night, and I got this solution from some website.
Facebook saves your cache thumbnail. It won’t refresh even if you delete the thumnail/image from your server. But Facebook allows you to refresh by using fbrefresh
I hope this helps.