This post is an ad and at the same time an effective demonstration of the usefulness of advanced multivariate A/B tests. This dual purpose content/ad is very r

This post is an ad and at the same time an effective demonstration of the usefulness of advanced multivariate A/B tests. This dual purpose content/ad is very relevant to this community because we care about usability and good UIs. So while being a self-promoting piece it is also a well written tutorial of sorts.