ecommerce Marketing is Broken: The Problem With Promo Codes The promo code is one of the most commonly-used forms of measuring marketing effectiveness, but it's not a silver bullet and has lots of issues.
A/B Testing Unbounce Upgrade: Send Variant IDs to Google Analytics Unbounce could be making you toss out winners and pick losers due to the way it reports on conversions. These GA-based fixes can be a big help.
