I have a rich content site that sells a number of products. We've recently deployed the Facebook Like button in some content directories. Since we have lots of traffic, the number of likes grew quickly (e.g. 300+ likes inside of 10 days). In a simple A/B test we're seeing a ~20% increase in conversion on pages with the Facebook Like button (the test is significant with over 1.5M visits and well over 1k sales). As the test continues, the results are getting stronger. Simply put, unique visitors that see the Like pages convert 20% higher. Anyone else seeing similar results?