What the Tech is a blog at On10.net that provides "Simple explanations of the latest tech innovations, jargon, devices, practices and more." So far there have been explanations of things like Del.iciu.us, Digg, Wikipedia, RSS Readers and podcasts. Your students may be up on all of this (or maybe not) but you and the parents of your students may not be. What the Tech looks like it will grow to be a pretty useful source of information to keep up with what is happening in technology. I highly recommend it.
By the way, the Education at On10 blog is not bad either. Especially when one of the other members of the group (yes I occasionally post there) posts something interesting.