If y'all need an automated solution to backup your entire blog images, I just released a tool.
I have worked out a number of bugs and added functionality to prevent Deduplication of data using hash checks and symbolic links. I will be updating the latest soon but here is the existing repository.
https://github.com/anthonyadavisii/SteemYaLater
Also, here is a video of my working on the previous version. More to come
@good-karma, I'll work on updating / debugging the code last night and maybe this is something you will want to offer your users to simplify backup