¿Hay alguna razón por la que las copias de seguridad diarias reduzcan su tamaño?

Sam, I’ve been thinking about why our backup is so big when we don’t really have that many images uploaded… I think it might be because of the welcome DiscourseBot.

From what I remember, it asks users to upload photos to help familiarise them with the upload system. I’m wondering, would it be a good idea to have Discourse automatically delete these PMs (and all uploads inside them) after 2 or 3 months after registration?

It seems a waste hosting these uploads when they are not going to be seen by anyone and are effectively for testing purposes only… what do you think?