I wanted to signup for the service offered by the Techcrunch 2011 Disrupt winner, GetAround (which by the way is a pretty cool service) and went to their website. And what do I see? I need a facebook account to use their service. I know Facebook is popular, but how fair is it to require a potential customer to have a Facebook account?? 
It has become like this now…. when two strangers meet and become friends… they ask “hey, are you in facebook”, instead of asking their contact numbers. I personally experienced it 😛
Don’t know if Facebook ID will be printed in our passports too..hehe 🙂
:).. I guess, I am still stuck in the dark ages.