Does using PMs affect britboard bandwidth usage?

Another Querie, Does activity via pm take up space and come to that does the amount of messages that are on file in our in/outbox make a difference?

Using (i.e. sending and receiving) PMs probably uses around the same amount of bandwidth as browsing the forum.

PMs only take up space while they're stored in your inbox or outbox. This makes no difference to used bandwidth though. It's a question of disk space.

Running out of disk space isn't a problem though - the board (including user-uploaded files) only takes up around 15 megabytes and we've got a few gigabytes available.