Last year we posted cart buttons from over 100 top online retailers. Just over a year later, I spotted 46 out of the 111 retailers using different button designs. But does that mean they're testing? Not necessarily. According to Bryan Eisenberg and Future Now, 75% of retail sites don't test anything. So, many of these examples below could be the result from a site redesign. Also, there may be tests that I missed if I am included in the control group of a test (being shown the original button). If you're not testing, you're leaving money on the table. If you think it's too expensive or complicated, please join us on September 11, 2008 for a live webinar with Bryan Eisenberg, the author of Always Be Testing to learn how easy it is to get started with Google Website Optimizer (free tool!). Come ready with questions, we'll have time for them during the call. So sign up today! Until then, please check out these cart buttons and leave a comment on which are your favorite redesigns, or which ones you suspect are testing.