How we unnecessarily burned 20k with Facebook Ads
I wanted to call this out:<p><i>We solved the first problem through a separate tool, which labels the user with the originating source when registering.</i><p>Yes, yes, yes, and  yes. If you're spending any significant amount of money on advertising, you need to be doing this. Don't rely solely on third-party cookies and session unification attempts. If you have a USER table in your database/crm, add the five UTM fields to it! Conversions for most businesses are a multi-day and, often times, multi-device process.