Prose- To blog or not to blog... How is the question!

As I am trying to figure blogging out, I am toying with the idea of creating an online writing portfolio. How I would categorize that would be very helpful. I wonder what may be done in order to successfully navigate this idea. These are my ideas: I could post my research papers, my poetry, my journal if I want to go intimately public, or I could just keep it simple, making it an online journal. I like the idea of having an online portfolio; the organization is what concerns me for now.