There is no real "tip" of the curve, it is gradual. Anyone placing a vote with the intent of rewarding the content benefits from additional votes added on top of it because of the continual convergence to linear.
The idea of this curve is to heavily penalize microvotes which attempt to slip under the radar with a million comments each earning 0.03. It probably won't have much effect (though still a little) on larger payouts including most paid votes.
