How Do I Back Up This Here Blog?

Ok, y'all, I need your help. For those of you with blogs, I have a lil question. Do you back up your blog? If so, what do you use/how do you do it? I am just scared that I will end up losing all of this sometime and that would make us all sad. I do have my pictures yes, but stories, no. So help me out here if ya can.

Please and Thank You! :)