I think that web logs are interesting. It seems much  easier to manipulate the log vs. an email or chat room.  I was surprised at how people really took a look at how web logs can help students as well as teachers. This is an excellent tool for group discussion, especially when the group has a child who does not like to verbally share their thoughts. I also think that this type of technical interaction could make a child more sociable.
I feel that this tool could help teachers when it comes to exchanging ideas. They can receive feedback and respond back at the same time. It is pretty cool that you can control who reads your comment and who cannot.