I have just taken a look at the blog of proximal development and read an interesting blog about the impact on students of having a blog taken away. It also mentioned a piece of open source blog software that might be worth a look. [Though not if you are in France :-)]
I have also added a link to my web site under the My links section in response to some comments I read recently on Stephen Downes’ blog about bloggers who do not say who they are.