Any Member that wishes to add a blog to the site can do so. A blog is a free form post that can be about anything you wish. Often it is helpful to make a quick list of bands or whatever that needs to be added to the archives. Maybe you just don't have the time or for one reason are finding the idea of adding 10 or 20 listing a little overwhelming. So, to strke when the iron is hot, maybe a blog with some of the information that you know, might be helpful for future reference or maybe someone else will read it and add the listings.
Also it can be as simple as you just have something on your mind that you want to share or came across something that you would like to share.