Looking for Input!

I am starting my 2nd week of blogging. As I am learning more about it, I love the idea of having my students blog (particularly for the health portion of class). A lot of my eighth grade students are active users of online programs such as MySpace and FaceBook. Therefore, this seems interactive and ideal. Also, as pointed out by Richardson, a format like this allows the less outgoing students to participate comfortably. It would also be neat to see students responding to others who they do not normally socialize with.
The challenge that keeps entering my mind is; how do I keep the "social activity" out of the educational blogging without suddenly bringing down the students interest level? I would love to hear any suggestions that you may have!

Here we go...

In this blog, I would like to combine new knowledge of the Web and how it can be incorporated into physical education, and teaching in general. This is the first blog that I have created, and my only previous experience with them has been as a reader. In all honesty, I have only seen "social" blogs and I viewed them as a bit pretentious and "silly." After beginning to read Richardson's book, I see that blogs can be a great educational tool. I also really like the tools that can used on them, such as polling and comment posting.