This is a special system which calls special verbs on many different objects. These verbs prune things from various objects. For example: the text that is stored for gps displays-- basically forever, after they are generated. It's not needed and it takes up space. Another example would be photos that are in memory. It prunes them back to disk. This code isn't new, we've been working on it and improving it for about 3 years. However, we were running it manually now and then. It's now been $scheduled and will run automatically once a week.
When it runs you'll see a notification on game-help as it might cause a tiny bit of lag since it's writing a lot to disk (and it uses a fair amount of CPU while it's running).
[-][Game-Help] [SYS-MSG] Autopruner is running... cleaning the MOO up like a boss. Could cause a teeny bit of lag while it's running.
[-][Game-Help] [SYS-MSG] Autopruner has finished running and cleaned up 535 bytes
It'll probably prune about 2-3 megs each run-- mostly photos. But it will keep us nice and healthy.