I really enjoyed looking at all the different blogs from different classrooms and countries. I really liked the one from Australia, they said mum instead mom and I got a kick out of it.
I think I would use the blog in my classroom for various things. I saw that one teacher had a book report form on her blog and students could fill it out on the blog and send it to the teacher. I like that,, we do a lot of book reports in class and I think the kids would love doing it on the computer and they could also do them at home when they read a book. I also think I would use by posting pictures from field trips, parties, special assemblies, etc. The idea of keeping notes to parents, various forms (field trip, lunch orders, etc.) and sign up sheets for volunteer drivers or for treats in the classroom online would really help parents out too. I have some parents that I rarely see because they work and their kids go to latchkey so I think they would love seeing the blog to see what we are doing.
I think the students would have to be taught how to search for things online and be responsible and respectful as they are searching. I also would want to approve everything that is posted to the blog in case there are comments that want to be posted from parents or others that are unsuitable.