[dataisfun]

Yes, I know. But if you want to tell YC they don't get their pro rata (or practically speaking, convince the founder to tussle with them over that), have fun. I've seen them not budge even when it makes the founder's life much harder as they struggle to balance the pretty typical ownership requirements of new money.

[rlucas]

Good point, YC is a uniquely powerful market participant these days and has both the power and the breadth of portfolio to negotiate hard.