if you are into improving the way you load test your web application.. we use Selenium to load test Germain. Selenium is better than other load testing tools we have used (Selenium simulates the Browser - as opposed to just sending out http request to the web application, like HP Load runner does)

Note/my apology: I told several of you that we are using Gatling is true but that is for Rest Api testing (not user testing..)

Doc and example of Selenium script