Je blogue, et vous, vous bloguez? is a presentation that Barbara Dieu gave at Cyberlangues Colloquium in Sao Paolo last Wednesday August 25th. It's a very good introductory presentation (in French) to blogging, and in addition, includes the following links to innovative blogs that can be adapted for language learning:
Buzznet is a sit for photo-blogging. You can see an example of a teacher using it here: Vance Stevens' photoblog
Moblogging is a form ofg blogging by mobile. Again, an example can be seen here:
Audio blogging. Barbara has some examples on her weblog Bee2online
There are other example blogs given on Barabara's presentation, so be sure to check it out.