My reasons for forcing Facebook login is to know more about my user in order to serve the relevant/personalize content. It's a chicken/egg situation...
I believe people would be less turned off if you showed them a glimpse of what's behind that wall, a pretty picture of a lake tells me NOTHING at all, even a screenshot (slightly blurred if you want) would go a long way towards letting me decide if it would be worth signing in.
As it stands now the default reaction is 'nothing to see here, move along'.
My reasons for forcing Facebook login is to know more about my user in order to serve the relevant/personalize content. It's a chicken/egg situation...