As for "how much is too little", when I first signed up years ago, I only powered up 0.35 USD worth , which was not very much at all. Back then there was not very much explanation how it worked. An account needs at least 150 HP to optimize the voting function, and 600 Red Fish, Dolphin 6000 , Whale 60,000 are the levels. So how much to power up is your choice, but we are swimming together! :D