You start a blog and jot down your thoughts. You tell the world what you had for lunch, accompanied by a nifty little photo of the food-filled plate sitting on a white tablecloth. You talk about how it sucks to be you, or how it is so wonderful to be you. You write reviews of movies and tv shows and books. And for a while, you are happy.Then you start flipping around the blog sphere and notice that other bloggers write and receive comments. They link to each other. And they have all this way cool stuff all over their…