blogs in the classroom

I can see some use for blogs in the classroom. In a middle school computer classroom i can see using this site to expose kids to blogging, the advantages and pit falls of blogging and the safety issues. I see it would be good exposure but as of right now, i don't see a lot of applications in the middle school arena. I guess when i explore blogging some more or read the other peoples blogs, i may get some ideas on how to use blogging in my classroom.