Just a quick update:
I've just recently created a Facebook Page for The Critical Classroom. I'm finding it's an easy way to share the incidental articles and links that I come across during an ordinary day.
I'm very conscious though that not everyone is a fan of Facebook, so I've created a The Critical Classroom tag on my Delicious account where I'll post the same links (along with my editorial in the comment section).
The Delicious account won't have everything though - links to internal FB pages will probably not work. But if you're not into Facebook, yet don't want to miss out on additional ideas and resources, bookmark or subscribe to this link - http://www.delicious.com/lwatego/thecriticalclassroom
If you have any other suggestions, please let me know.
Update: Delicious.com have recently updated (it was a service originally owned by Yahoo but was sold). The Delicious folks have created a new feature called Stacks. I've created a The Critical Classroom Stack for readers.