We've used http://Airbnb.com over the years and the service matches travelers with BnB hosting owners - - worked really creat - - until this week. We attempted to book a visit with a host with which we have stayed twice previously. Now the site has as new feature - - User Verification ID. The concept is novel enough in that it attempts to match the traveler with at least two Social Media site (Facebook, LinkedIN, Google). We had our reservation cancelled because 1) we don't have Facebook or LinkedIN accounts, 2) don't have a webcam to create a personal video, and certainly would not provide any form of government id (driver's license or Passport).
http://Airbnb.com has fallen into the trap of believing that Social Media is truthful, useful and a meaningful means of identification. We are seniors and like to travel, even world wide. I am a retired professional programmer. There are many websites using Social Media for single-click login, but attempting to use it as a means of ID Verification is totally bogus. Our friend has lost a book, we will not use http://Airbnb.com again (too bad - has some nice listings).
You might have no concerns for privacy and use the Social Media frequently - - good for you, but for those that don't, the new policy of ID Verification is a nightmare.