jmLÉMemo, what if you incorporated a system similar to Yours.org's voting system. If you tip a post early you get a % of the tips that follow. But the original poster still gets like 50% of the total tips.
https://whatsonchain.com/tx/e209db0a2a9f821dc4cec608b6f9379d58b4cf8020468c90f0e2ef6158d8d0cb