This is cool but (assuming I understand) we could do with the ability use our own account claim tokens in a similar way - create a link which will deduct a token from our own pile. I'd be happy to offer mine for free, as long as i was in control of who I was sending the link to - this would destroy steem-ninja's business model though so I guess I'll be quiet now :)
RE: Trying out the new INVITE tokens from Steem-Ninja. Works Great!