No mystery algorithm.
These are the operating rules for every product and website on the board.
Ranking
Rank is determined by the latest successfully settled bid amount. A new bid must meet the price shown at checkout. If a URL is already listed, its next bid must also be higher than that URL's current bid.
Placements
Each URL can have only one listing across the entire board and keeps the category used by its live listing. The same URL may bid again in that category. Categories filter the same global board and do not create parallel copies. Every paid placement is labeled as sponsored.
Eligible links
You may submit a working HTTP or HTTPS website URL. Links containing malware, impersonation, illegal material, deceptive redirects, or abusive content are not allowed.
Moderation
We may pause or remove unsafe or misleading listings. A high bid never overrides safety review. We may also correct an obviously wrong category while preserving the paid bid.