Google does it too. It kicks in when you are on public wifi if you opt in. It's a vpn app at the end of the day that's optional. I don't see much reason for all the outcry. Assuming a majority of the web moves to https soon (going by the chrome roadmap), you are only giving second order data like dns to the vpn or isp. And I don't see much reason to trust isps more than Google/FB.