If you've recently looked at your Website Optimizer reports you may have noticed something different. Today we launched another new feature designed to help you better understand the performance of your variations: over time charts.

With over time charts you can see the cumulative conversion rate of each combination over the life of an experiment. This can give you a better understanding of how your site is performing. The new charts are available for all Website Optimizer experiments, and you'll find them on the reports page.

We'd like to give a special thanks to Dennis Huo, who interned with us this past summer and built over time charts as part of his work here. Thanks for the charts, Dennis!