It is important to teach middle school students how to treat the digital world because they have so few filters in place as young adults. We have to teach this to them, including how to treat people and ideas from the web. Manners and responsibility have taken on a new meaning these days, because there is access to a world that didn't exist before. I like Wes Fryer's site -it seems to the point and my students learn best in that format!
The best time to start this teaching is as soon as possible after we get back to school, but ti needs reiterating constantly. Back to school night would be a good time to include parents in this discussion, although time is limited. But parents could help get the message across to our students!