Although I do not like blogs a whole lot I actually find them very useful when I am trying to communicate and collaberate with my fellow classmates.
I find that blogs are a very good way for students to do homework and such without having to actually turn in a finished paper to the teacher. We as a class can just post our blogs and have the teacher and other students grade and comment on them.
Also, blogs help students learn to use different kinds of internet tools. These tools are normally not easy to learn how to use, but once you figure out how to use them correctly the outcome is very rewarding.