Blog Musings

I've spent several nights surfing blogs using the "next blog" button. I'm surprised by the assortment of "stuff" out there. The number of entries in languages other than English definitely make one aware that WE are not the center of the universe. I'm also surprised by the sheer variety of posts: everything from gardening, to gadgets, to publishing poetry, to exploring one's sexuality. I must admit I have clicked on several and felt totally uncomfortable with the pornographic images displayed for the world to see. I'm questioning the uses of blogs in education because of this. If I can sign onto a blog and use the "next blog" button to see what is out there, I can imagine students can as well. I would not be comfortable with my students clicking on some of the sites I have seen. How do we address this? Any ideas?