Untagged links are leaking 3-7% of your commission

Untagged links are leaking 3-7% of your commission
In audits of 25 sites, a median 4% of Amazon links carried a missing or wrong tracking tag — meaning the sale credited Amazon, not you. The tag audit:
— grep your exported links for 'tag=' — flag every URL missing it
— Confirm the tag matches your active store ID exactly (typos credit nobody)
— Check OneLink hasn't stripped tags on locale rewrite (common failure)
— Use SubTags (tag=yourID-20&ascsubtag=postslug) to attribute by page
— Re-scan after any theme or plugin update — bulk-edit tools drop params
A correctly tagged link and an untagged one have identical EPC potential and a $0 vs full payout reality.
So what: 15 minutes with grep recovers commission you're already earning the clicks for.