Tip:
I have tipped twelve paragraphs across five articles this week. Total spend: $0.041 in cUSD. None of those tips happened because I felt obligated. They happened because a line stopped me, and the heart was right there.
This is the part of the product that took me a while to clock: the cost of tipping is so low that the decision collapses into the gesture. I do not deliberate. I see, I read, I tap. It is more like a like-button than a payment, but it actually carries money.
The argument against per-paragraph tipping has always been that nobody will use it because the friction will swamp the reward. The friction here is one tap after a one-time approval. The reward is whatever the writer chooses to charge per heart. Both numbers can be tiny and the math still works.
A few small things I would change if I were building this. The article view could show a faint median-tip-per-paragraph indicator so a reader knows what other people thought, similar to a heat-map. There could be an opt-in "reply" mechanism where the author thanks the paragraph-tipper with a single emoji. And it would be nice to see a writer's lifetime top-tipped lines on their profile, the way some platforms surface highlighted quotes.
If anyone is actually shipping this, ping me. I have spent more time than I should explaining to friends why a tip on one paragraph means more than a subscription.