Every account on theVestry gets a blog you can use or not use to your heart's content. Feel free to use it for whatever content you like. It could be a good place to record thoughts about ministry, items you have been working on, things you want to share with others, or just a diary for yourself (remember that others can read it though). 

They work like any other blog system out there, you can include text and images and links to things. Entirely up to you! Have fun!