I've written several times about our student blogging. It's not an easy task to read all the writing, and even less easy to comment on them in a meaningful way. So ... can't say that I'm really good at that part. But I am reading, enjoying their writing, commenting where I can, and assessing in simple ways.
One of my goals is to share the student blogs more widely. In an effort to make that happen, I've added a page on Algebra's Friend ... a RSS feed that will highlight blogs as they are posted. I created a similar feed on our class website.
One of my next steps is to add the student blogs to a twitter feed ... watch out!
If your students blog, please contact me. I'm interested in collaborating on this project!