I work for Fidelity Investments in Galway Ireland.
I've used open source testing tools like canoo and selenium to test web apps. I've included these in our build process so we have a build/deploy/test workflow in place.
I'm interested in other participants experience of these tools.
Also, I'm involved in research into Agile, see http://www.lero.ie/gaia
The research topic is called "Automated Acceptance Testing vs. Software Quality in Agile Software Development", so anyone that has some experience/data around this area would be of interest to me.