We've open sourced our Selenium tests for the Maps API, and we're
hoping some of the developers here will be interested in contribute to
them. Check out this blog post:
http://googlegeodevelopers.blogspot.com/2008/08/do-you-speak-selenese...

Contributing a test is a good way of ensuring that your particular
usage of the API doesn't break in future releases, and it's also a
good way of getting familiar with the Selenium testing framework. You
may find yourself using it for personal projects as well.

As usual, let me know if you have questions.

- pamela