BLOG..."a user-generated website where entries are made in journal style and (usually) displayed in a reverse chronological order." http://en.wikipedia.org/wiki/Blogging
How can I use this in my classroom?
You can post class information, discussion questions or assignments. You can students review and comment on information. The possibilities are endless.
How can I get a blog?
Check your school and district policy before creating a blog. There are many free as well as subscription-based blogs out there, but be warned that all of them are not entirely safe to use in the classroom. A few to look at are
PowerPoint on blogs from German Suarez
Download blogs_in_the_classroom.ppt