This last year I used a wiki with my 2nd graders. The students were sharing their learning about what they were reading and learning how to type and use technology. I am also currently using a blog to keep parents up to date. The tech department has been having server trouble so I have not been able to update regularly, but I hope to do so in the future, and not have to send out a paper copy of the newsletter each week. The wiki would be a great resource for students to post work, and to respond to others work.
I also enjoyed the Don't Feed the Trolls article. I agree, we need to teach students how to use technology correctly instead of not letting them use it at all. We need to teach them how to respond to each other in the correct manner. This is where their world is headed. They may never need to leave their house again. This maybe the only way they communicate with the outside world, they need to learn how to make friends, nicely!