background: using facebook connect gather users' facebook image url (i.e. http://graph.facebook.com/111111/picture) 111111 each user's facebook id.
objective: store image url in way in facebook id in url isn't outwardly visible (meaning user won't able figure out user right-clicking 'copy image url' , looking @ id in url)
write script download image fb's server, output image.
ie: www.yoururl.com/viewimage?id=unique_token_associated_with_fb_account
so when sees url, see unique token maps fb id in database.
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