What is a blog?

What is a blog supposed to be? A diary? Should I just tell stories about my life and write about my day or my feelings for my friends and enemies? No, that can't be it. I don't think a blog really has to have a theme or any sort of guidelines. I could write about how much I hated a recent hit movie. And then fans of that movie could comment about how wrong I am, and then an intelligent argument on the merits and flaws of the movie could develop. Or if I'm feeling particularly happy, I could describe the beauty of the world. How every bird resting on a tree limb and every summer thunderstorm was meant to be. Color and shape and sound combine to create natural art, like the spray of a waterfall blasting the rocks below. And from there I could move onto the beauty of humanity. How every person driving down the highway has a different story to tell and a different obstacle to overcome ... their dreams and loves, as well as their opinions and complaints. And I could write about about how humans are a species destined to create. Whether it is creating a story in song form, or building a beautiful bridge, humans gain pleasure from making something new. Being in the image of God the creator, that must be where this desire comes from. I might throw in a political blog every now and then, and rudely bash your favorite party. Yes, since a blog can be about anything, and I am going to have many posts in the future, I felt it necessary to have some sort of rambling introduction. The meaningful, pointed blogs can come later.