In at least the United States school system, we spend so much time learning how to write. In K-12 we learn to structure our paragraphs, papers, and use citations in such a way to convey information that we have found from other sources and with that to write some of the least interesting papers. Then we move into undergraduate in college and we learn to take the works of others that we found in K-12 and build upon them with a couple original ideas and add conclusions based upon them. But in this process we learn how to report, not how to write our thoughts down and exam them.
A Journal is an interesting thing, it is written for oneself. It is a place to list out and organize ones own thoughts. To exam those thoughts and build upon them; to think. In a Journal there is no expectation of well structured writing, perfect grammar, or immaculate spelling; just the flow of ones thoughts. These thoughts can be written in a way that makes sense to the author.
But then, why is this not a blog? It has been published online using WordPress, the blogging (and everything else) software. A blog is meant to be informational. A blog can represent a person, brand, or even a pet. However, a journal can really only be a thinking person.