Why build this?
Most attention markets are invisible. Platforms decide who appears, advertisers rarely know what others paid, and visitors cannot tell an organic recommendation from a sponsored one. Here, the mechanism is the product: the highest confirmed bid ranks first.
One ruleMore confirmed spend means a higher rank. Equal bids keep the earlier listing above.
What a bid buys
A bid buys public placement on the board. It does not promise traffic, customers, revenue, or a fixed time at any position. Another product can outbid you at any moment.
What stays public
Listing names, descriptions, categories, destinations, bid totals, rank, click counts, and payment activity are public by design.