Blogs and wikis

http://www.wiki-teacher.com/index.php  This wiki offers great professional resources and then discussion of them by those who have tried them.  I can see me using this as a way to increase my knowledge of any subject area but especially in reading.  I would say that this wiki uses some of the features of a blog in that teachers can make comments that others cannot edit.  But  it differs from a RSS feed in that I can choose the comments and resources I want to access.