[haddr]

Just one privacy question: Imagine If I log in using the same email to Service1 and post some comment. And later, using the same identity I log in to Service2 to post some pictures. Does Service1 and Service2 (imagine the share some data) know that it was the same person?

PS. Good work, it looks quite convincing!

[SteveArmstrong]

They both know it was the validated owner of [e-mail], so if Service1 and Service2 compare their users, they will see the same e-mail address.