What is "Blogging?"

On Thursday, in my junior writing class, we had a presentation about how to blog and tips on running a successful blog. Although most people in our generation have a basic idea of what blogging is, the presentation definitely went way more in depth than anything I had known. Blogging can be anything from a basic journal of yourself, to celebrity gossip; ie: PerezHilton.com. I thought he did an awesome job during the presentation and helped us all to better understand blogging.