Thanks for the info!
I believe that the Share button has been deprecated in favor of the Like button, and will no longer be supported. The Like button is now recommend whenever possible to drive maximum traffic to your apps.
The best way for Facebook to recognize your Product title, description, or thumbnail tags would be to copy the URL of the Product from the ProsuctDetails page and paste it into your status and your Product info and images will then be "Shared" and the Product title, description, or thumbnail tags will be displayed.
The Smith ShareBar uses the Like function to share Products URL however the ability to display the Product title, description, or thumbnails is not currently supported however I do think it would be useful to add this ability so I'll add this to our Ehancement Requests forum.
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