I've noticed recently that if I log into gmail, then clear all google cookies (the gentleman's way of logging out), youtube still knows my account name. They must do a redirect to youtube or other third party domain name to set a cookie when I log in. Fucking creepy.
edit: just tested it then, and logging in to gmail initiates a HTTPS connect to a bunch of domains, including youtube...
accounts.google.com
ssl.google-analytics.com
accounts.youtube.com
mail.google.com
mail-attachment.googleusercontent.com
pagead2.googleadservices.com
chatenabled.mail.google.com
That's just logging in, nothing else. No wonder they can tell every fucking thing you do on the net.
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