Wow when will people learn?! How Not to make invites, part 2

You figure after the most recent opt-out/in debacle with Facebook's Beacon that people would have learned to respect others' privacy by now.

Obviously that's not true across the social networking scene (I don't dare call it an industry).

Here's the TOS from a site which sent me 2 spam emails this morning:

By registering for Yaari and agreeing to the Terms of Use, you
authorize Yaari to send an email notification to all the contacts
listed in the address book of the email address you provide during
registration. The email will notify your friends that you have
registered for Yaari and will encourage them to register for the site.
Yaari will never store your email password or login to your email
account without your consent. If you do not want Yaari to send an
email notification to your email contacts, do not register for Yaari.

and the emails -------

  ************** wants you to join Yaari!

Is ************** your friend?

Yes, ************** is my friend!      No, ************** isn't my friend.

Please respond or ************** might think you said no :(

Thanks,
The Yaari Team         

Notice:

You have to sign up for both accounts to make them not your friend.

WTF, how annoying/shady/evil is this?