Hello,
I would be delighted to participate as a beta tester for AirDroid. I'm not sure what criteria you are looking for in beta testers, but I've been working for the last year in software testing, and my last job consisted of testing my company's Android app.
Let me know if y'all need any help with the testing thing. I'd be more than happy to help.
I just realized there's an "Apply Now" link on the OP that leads to a form where I can sign up... I like turtles.