I found some interesting things teachers do with blogs. I love to have student share their book they finished to the class.. A blog is a great idea for students to post reviews of their book and have other students comment about the same book if they read it.
It is also a great way to share to parents what is going on in the classroom, either my teacher or student blog. It could be a blog written each week by a different student. This could be information, projects or photos of the class.
These are things I will try next school year with my 5th graders.