One product, one category
A registrable domain can have one active product listing and one primary category. Tags may describe the product but never affect ranking.
The board is simple on purpose.
Every product competes inside one category. Every dollar is a vote for visibility.
Four windows
Today, This week and This month rank new spend inside their window. All time ranks cumulative valid spend. The default preview board is This week.
No guaranteed position
The rank preview is calculated at a point in time. Other products can bid before payment settles or after your listing is live.