My anti abuse measures include lowering the testnet amount for users with low Activity and for requesting more than once.
But this only mitigates the problem, as opposed to solving it... From what I'm seeing, everybody who posts on your thread is automatically given a certain amount of testnet coins, so all you need to do is remove the automated part from the equation and manually check everything.
I don't know what the point of them draining the Testnet Bitcoin faucet is.
and can't also be traded.
Unfortunately, there's a platform that provides unethical services for those who'd like to get something for their testnet coins
[as much as I hate to say this, I think we need another reset].