For some time at World Singles, we've been running a suite of Selenium-based tests as part of our automated build. We having been using the selenese Ant task and HTML-based test descriptions. We have 58 tests containing 337 commands and it takes about five and a half minutes to run that section of our build. We can also run most of the individual Selenium tests in the browser using the Selenium core HTML/JS tool. It's been working pretty well for us but there are a couple of sticking points.