Agreed. My favorite trick? I was going to sign up for a Quora account today, finally knuckling under to the stupid ExpertsExchange fuzzing crap. So I click "Sign Up With Google" (because the register page on the answer page doesn't show Twitter). They demand permission to "manage my contacts". This is a throwaway email, so I say sure, okay.
They go back to the registration screen and still want an email and password just for their special snowflake site.
I am forced to believe that the only reason for the misleading and, frankly, fucking dishonest path through my social media connections is to have more names to potentially spam in the future. Fortunately they won't get such from Dick Wickerson, Completely Fake Account.
I think it's in case Google's auth (or even Google itself!) goes down—Facebook's was down the other day, and if you don't provide alternative sign-in mechanisms, users can't sign in.
Sure, but as a site you should either depend on 3rd-party auth and deal with the possibility of downtime, or be up-front about wanting your own credentials. To pretend like FB or Google login will work and then demanding a user/pass is deceptive and really, really annoying.
They go back to the registration screen and still want an email and password just for their special snowflake site.
I am forced to believe that the only reason for the misleading and, frankly, fucking dishonest path through my social media connections is to have more names to potentially spam in the future. Fortunately they won't get such from Dick Wickerson, Completely Fake Account.