I agree with you, but what irks me more is the disingenuously of it all: "We'll take care of the rest".
So basically I sign up a friend to receive petty "gifts" that some third-party chooses on my behalf with absolutely no thought given on my part whatsoever. How is anyone supposed to be happy about that?
And on the receiving end of the deal, if I receive a 2-dollar present for ten days straight then I'll be looking for the unsubscribe button.
The idea behind this startup - bringing random acts of kindness into social networking - is noble, but I feel as if they need to rethink their strategy a bit.