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Buy and sell anything
eBay blends playful variable rewards with practical friction-removers, including random heart animations in live auctions and one-click postage address fixes.
Key takeaways from 6 UX Bites
Tapping a live reaction sends a random number of hearts, i.e., a variable reward
Winning a live auction triggers a full-screen animation, so the payoff feels earned
Postage labels flag a slightly wrong address, with a one-click fix before printing
If features can be coded in minutes, thoughtful design is what wins
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