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I had a discussion with a friend today and he claimed that by using some Facebook Social Plugins on your site, you could find out Facebook profile information about the visitor of your website (if he or she is logged in to facebook).
I claimed there is no way that’s possible in javascript, beceause of the “same origin policy”. I am right? Or maybe there’s a way using ajax, flash or canvas?
If possible I think people should be aware of it 🙂
The plugins operate by creating an iframe, so there is no way for your website to get this information via javascript. The only way to get information about the logged-in facebook user is if the user authorizes your application.