First, I have to "invite you" to be an author of this blog?
How can you be invited?
You have to create a gmail mail address, in www.google.es, Gmail. Then you have to tell me which is your gmail address in class. Later I will include you in this blog. After that you will be able to publish your comments.
I will check everything you write before anyone else can see it, so that noone can make a bad use of this blog.