As of right now, there are 2,669,533 posts on this board. That’s quite a bit, but how many megs/gigs of information are here on the SDMB in the forms of user posts…
380 megs for the posts, 4 terabytes for the secret porn files. (you have to be a special member for acess to those) 
You should ask in ATMB. At one time, it was close to 1GB, and is likely a fair bit more by now.