Newbies' spams are nothing compare to big fishes' spams. I don't think that idea could solve the problem. To prevent spam, I guess they must have WORD FILTERING & MINIMUM WORD/CHARACTER COUNT. Only unique posts/comments should be rewarded and must have a CAP, not minimum.
This idea is... I prefer not to say... LOL! I am still trying to control my fingers in typing bad words. :-D
Show me the moneeeey! 😂😂😂