If you are a loan officer or a mortgage broker, it is very important to exercise every marketing tool available to get your message in front of your customers.
When it comes to personal blogging, documentary is the default genre. There are plenty of blogs that serve other functions, but many blogs are primarily catalogues of the life experiences of their author. Although there are quite a few blogs that focus on collecting poetry and other forms of creative writing, the vast majority of personal blogs are in some sense documentaries.