Some staff are keen to use blogs and with the vodpod widget should be able to develop a good resource that students can access at home and school. I am sure good ideas will emerge as understanding grows.
It is a pity that Twitter cannot be accessed at work; this Wired article explains the benefits. I was going to check if YouthTwitter can be accessed through the filter today but didn’t have a chance too. Some ideas for using this with students are emerging.