My reason for use a blog.

Advantages

-Interactive with classrom friends
-Post comments in friends blogs for practice our english
-search many blogs for support my english
-search information for my homeworks

Disadvantages

-distractions if no use correctly
-post offensive commets in a friends blogs

Links for support my english and homeworks

http://menuaingles.blogspot.mx/
http://cmecafenix.blogspot.mx/