I’m not sure it is clever, because you’re bound to get an entrepreneur who infects their local school to farm rewards. It’s inevitable with these kinds of schemes.
You then create a bigger bounty to identify the entrepreneurs, and now it's bounties all the way down.
Somehow it seems to have worked here. There's probably a bit more to the secret sauce.
500 SSP is about 4 USD. If you have the ability to come up with the scheme, you can do better with pretty much anything else.