This is an aside post, with the category of News. I’m not quite sure why you would want to use it. It makes a post with no headline, no author, no publication date. It looks a little funny in the stream.
Regardless, you’ll probably just wind up using one of the post formats over and over again. Or maybe you will wind up using one for brief news notes (like this here aside maybe), another for new maps (like maybe you’ll make a gallery of screenshots or thumbnails?), and a third for longer posts. Who knows?