Elsewhere
Other marketplaces and other charts
What transfers to other marketplaces and other ranking systems, and what has to be rediscovered locally.
Other Marketplaces and Their Ranking Systems
Rank systems differ in what they measure, how visible they are and how they can be tracked. What transfers from one marketplace to another and what does not.
Reference
Search Position Is Not Sales Rank
One is a published scalar; the other is a personalised, query-dependent distribution. Measuring the second properly requires a different method entirely.
Analysis
App Store Charts and Other Ranking Systems
The same reasoning applies to app charts, streaming charts and book bestseller lists, with different mechanics that change what the number means.
Reference
3 notes