Questions against blogs?

I wish blogs were available in elementary, or even middle, school when I was younger. Maybe it I would have a different perspective on writing if I had the experience with blogs. However, the introduction to technology in education pose new questions, such as, how early should teachers integrate the use of independent technology or should teachers secure their sites from the public? Students in early elementary are just learning to read, so blogs and wikis may not be the best way to integrate technology. Also, in middle school, I started using xanga.com as an online journal for personal use. Many of my friends also used xanga, and this led to constant checking of comments and views of my post. Blogs may also lead students to other online networks such as myspace and facebook, which may divert students from schoolwork. However, I still believe that the pros of blogs outweigh the cons (if any, not sure if there are any negative incidents with blogs).