click Oh look, it's a paywall or something. Alt+Left arrow Sorry, exactly why should I be registering, without even a glance of what's inside? I've seen enough

click Oh look, it's a paywall or something. Alt+Left arrow Sorry, exactly why should I be registering, without even a glance of what's inside? I've seen enough closed Q&A gardens - e.g. ExpertSexChange and Quora - for such sight to drive me off, instantly. How is this different from the other Q&A solutions out there? And more specifically, how is this not broken? For me as a casual bystander, the paywall (or login wall, whatever; duck test passed) is one of the signs of a broken Q&A site.