Guest blogging is preparing content that is posted on the blog of a website other than your own. I submit at least one "guest" blog post a month at a minimum as President of the Women's Business Network, because I write the President's Pen which is published at the beginning of each month. I link back to my own site each time, which brings me to the benefits of guest blogging. I occasionally manage to sneak in posts on other sites as well - this is something I want to do more often.