Blogging is, as you are well aware, a method to state one's opinion on the internet. Sometimes blogs are just rambling journals of thoughts, sometimes they have a theme or point to be made. Freeway Blogging is going low tech by placing thoughts on paper - BIG pieces of paper - and hanging them somewhere along freeways for everyone to read.
This is a growing artform. To see how some people are doing it, go to:
Express yourself, even when your computer is down.