Hmmm, that's pretty neat! That's a nice set of features bundled in to one little gizmo. I like the fact that you can chart the changes over time, very useful/cool.
I hope in the next versions that they enable wireless capabilities. They have SD cards that can connect to a computer wirelessly, so I don't think it'd be too big of a stretch.
Maybe I'll buy one for the few plants that I've going to leave at home when I move.
The fact that they use an LED as a light sensor is pretty darn cool, I didn't know they could do that. Electrical/physics stuff isn't really my area, so I'll have to read up on it.
Thanks for posting the link.