I have learned a lot from reading blogs around the web. I thought they had to be long and thoughtful, interesting and stimulating with a touch of humor. But a blog post can be anything and everything you want it to be -a picture, a personal story, an opinion piece, a poem, a philosophical dissertation, a short note - they all count. You don't have to overthink, rewrite, and edit ten times. Just say what comes to you and post it, and that's ok.
Say what you want about the internet and social networking, it has brought a lot of people together, made the world smaller, given people a forum to share, saved many people from a lonely world of depression and anxiety, and helped the social ones feel more connected. It's a different world, but I think it's good.