Nerditest stands for Nerdity Test, which is a software made up to help Google technology event organizers conduct a hands on sessions around the Google technologies while at the same time adding a social and fun aspect to the sessions.
This is an open source project with three parts: Android, Google AppEngine java edition, and GWT front end showing the final results.
Nerditest is not just a software or application, it is a social exercise which will help bringing fun, value to google events. The concept it self is valid in other contexts and technologies.
Basically, team members will write code during the event, building an Android client for the Nerdity test server side, and then use it to submit results, which will be shown to everyone using the GWT client.
For more information and for the source code, please check the project code http://nerditest.googlecode.com/. It is open :-).