>4chan users would love nothing more than to troll the administrators by breaking this
Not really worth it. You'd post something once, then you'd get banned for a week. Unless you have a fleet of proxies or can keep changing ip address somehow, and can keep posting while they try to fix whatever exploit it is you found. Kind of hard to target admins when they're all anonymous, too.
I have a cable internet connection and know the difference between a modem and a router. You'll have to take my word for it that every time I change my router's MAC address, my public IP does as well.
Not really worth it. You'd post something once, then you'd get banned for a week. Unless you have a fleet of proxies or can keep changing ip address somehow, and can keep posting while they try to fix whatever exploit it is you found. Kind of hard to target admins when they're all anonymous, too.