Conversion rate optimization (CRO) and web analytics are 2 intertwined disciplines. You can’t efficiently optimize anything purely based on gut feeling, without backing up our assumptions with data.

After reviewing hundreds of Google Analytics implementations on ecommerce websites one thing caught my eye: more than 90% of Google Analytics tracking of third party shopping carts end up with errors.

The other week, Brian Clifton wrote a very neat article on his well-known blog about tracking social networks by using filters. The data I got from the implementations he recommended in that article m