A possibly related note: I use two browsers to browse the web in an attempt to protect my privacy (as futile as it seems to be); one is logged in to google, and the other is not.
When using the browser that is logged in, I get 15 "+1"s for google like-like button. however, when using the other browser that's not logged in, I get 0 "+1"s.
I was checking to see if my .asia domain was safe, and found out that .info, .org, and my beloved .asia tld are operated by Afilias which, according to wikipedia, "is headquartered in Dublin".
I'm prepared to believe that wikipedia is wrong, but you'll have to prove it. with references, citations, and what not :)
Using flash to restrict consumption and bugging users with registration offers is not a better way to learn.