Describe the last time messy UTM tracking screwed you

Tell us what happened. What broke? How much time did you waste? What data couldn't you trust?

No judgment. We're trying to understand if this problem is worth solving.

Messy UTM tracking breaks analytics, wastes ad budget, and makes it impossible to tell what's working. Different teams use different naming conventions. Agencies send malformed links. Reports become useless.

We're testing if this pain is worth solving.