I have read other people's bloggs but never had one of my own nor commented on one. It is not so easy to write for public eyes without structured system, writing for newsletter, website where there are guidelines, editing etc.. is much easier than writing what you want, how you want and when you want. What I have noted is that on many bloggs except for the author, most people log in with fictional names therefore hiding their identity. This rasies question about who will read and how they will use this information.
Would I use it for teaching, I am not sure I can answer this so earlier in the course, perhaps later when I learn more about positive and negative consequences of utilizating bloggs. As a teacher, one would like to create a comfortable environment where all different students can express, pose questions etc. it is therefore possible that shy students may have difficulties interacting.
Using blogg seems being in class without walls and anyone else form outside can sit by and listen & observe. Therefore this raises a question of who is part of the class and who is not. In addition it would be interesting to explore the students perspective on this too. perhaps,one would consider using it only in cases where all studnets agree to the use of blogging.