I'm not sure I understand this.
So, it appears that Friendster still exists, and that it's quite popular in Southeast Asia. I have a domain that is apparently a natural one to use by teenage girls in Indonesia when creating their Friendster accounts. I have received many, many notification emails associated with these accounts, after which I request a password reset, receive the email, then log in and lock the account down, typically with a "HURR DURR I DON'T KNOW WHAT EMAIL IS" type status message. Is this a security issue of Friendster's, or a natural consequence of using another person's email address?
Of course, I've thought many times that Friendster is lame-o for not verifying email addresses, but I figure it's an indication that their business is so unsuccessful that they need all the users they can get, even if they have to use a "Reddit Alias" style account creation strategy.