Without SubTags you're flying blind on which page earns

Without SubTags you're flying blind on which page earns
Amazon's default reports show ASINs, not the page that drove the click. SubTags fix this. The setup:
— Append &ascsubtag=PAGEID to every link (e.g. ascsubtag=post-coffee-grinders)
— Keep IDs short, URL-safe, and consistent — 100 unique tags is a soft limit per report view
— Pull the 'Tracking ID / SubTag' report monthly
— Map earnings back to URL; now you know your actual per-post EPC
— Double-encode if your plugin mangles the param
— Reserve a tag scheme: postslug-position (e.g. -table, -intro, -cta)
This is the difference between 'Electronics earns well' and 'this one post earns 60% of Electronics.'
So what: a 1-hour SubTag rollout turns vague category data into per-post EPC you can act on.