Blogs. Almost everyone has one (or in my case, three or four), follows one, or wants to create one. With the exception of a select few people who might live under rocks, everyone at least knows what a blog is. It's like the journal you kept in the fourth grade under your bed, except know it's on your computer and out there for the world to read. Sites like Tumblr have revolutionized the blogging experience by making building your site and maintaining it almost effortless.