Zipit Messenger - Quiz Handset for Classrooms?

In my relentless search for a portable handheld device that supports WiFi and can be used to deliver quizzes in the classroom, I found a real gem.

It's the Zipit Messenger, developed by Aeronix. It has a variety of Instant Messaging capabilities and runs on Linux. It includes an 802.11b WiFi radio, 16-color greyscale LCD with QVGA (320x240) resolution, and a thumb keyboard with rubber buttons. Also included is a stereo DAC (digital audio converter) connected to a speaker and headphone jack. Internal battery lasts 3+ hours, and a tiny external AC charger is provided.

Not the perfect form factor for classrooms, but it retails for only US$ 99. Just imagine how cheap they'd be in quantity. Wow!

Needless to say, I bought one. When it arrives, I'll post my review. In the meantime, a favorable review from another user of the product is available.