What IS a blog?

Really? Everyone and there dog has a facebook, if not you've got a myspace page. Me, i have both. Don't worry, if you don't have either you've got your blog. But really, what is a blog? Some people post mostly pictures and others just tell about there lives. Why do we feel the need to have an online journal just so people can connect to us? What ever happened to hand written journals and a personal diary that you have a hidden lock on? Is it that we need to feel connected to more people at once? Maybe the cyber scrapbook is less messy than pulling out the real pictures and glue or maybe you're already on the computer so it's easier just to write down what happened that day. Or maybe you just need to take out some of your feelings. Whatever the reason, blog away! I'm going to go watch a movie.