worst user experience ever!

was invited to this via a (trusted) friend. so i go ahead and try to install the sucker. it installs then asks me to sign in using existing email account... okay. then it asks me to invite my friends.

NOW THE KICKER - THE SUCKER WOULD NOT LET ME CLOSE / CANCEL / ANYTHING UNLESS I INVITED A FRIEND!

YUCK. worst user experience every. i had to bring up my task manager to kill the app. - that's f--ed up.