It auths it against the BL master server.
How?
POST to http://auth.blockland.us/authQuery.php with NAME=Nullable&IP=79.136.95.7
Since when was this here?
Since servers started authing clients.
I'd like to know if you pay real money for the apps or you have points.
You don't pay.
I'm pretty sure Apple somehow, someway copyrighted "App Store" anyways. App Market?