Just because you can't share doesn't mean people aren't going to share it on FB. Just yesterday, I shared http://www3.gehealthcare.com/en/Products/Categories/Accessories_and_Supplies/Adventure_Series_for_CT/Pirate_Island on FB with my friends. I don't have formal experience in this area, but did want to point that out. There was an article on slate.com about the design of these, and I went looking for more information, and found that page.