This forum contains posts going back as far as January 2002. PMs have only been stored since April when the new forum opened, but there's no limit on mail box size. I currently have over 350 private messages in my inbox, and that's after deleting a whole bunch of them at one point. This is very atypical for the forums I frequent and it's gotta take up some decent disk space.
I am not advocating a forum wipe. But will there be one in the future?