what to do, what to do...

ok... so lets pretend i had no idea what a blog was, and i had never even seen one before. well, you no longer have to pretend, because its true. I honestly don't get the point of blogs, isn't this what Facebook is for??? My teacher is making us try this out so here i am, doing a blog. writing about writing about writing about writing. But i'm still confused. And when I say confused i mean more then usual. :)