[bachmeier]

This part of your answer is suspicious:

> from my perspective, it's not worth putting in all this effort for someone who isn't willing to even register for free

How does free registration benefit you? It's just more cost for you (time to deal with problems, money to store the login information, and additional load on your server). The only way your statement makes sense - and the only reason you'd care that much - is if you're planning to monetize the information.

Good luck, but it's too shady for me.