A few bits of information related to the very unserious games of volleyball played at the Institute of Astronomy during the summer:
We now have a proper list for this: ast-volleyball@lists.cam.ac.uk. Send volleyball related stuff there, non-volleyball stuff elsewhere. Note that (as a basic anti-spam measure) you can post to the list only from the address with which you're subscribed to the list: if this is causing you real problems, mail the managers (see below) and we can sort something out.
If you want to subscribe to or unsubscribe from the list, mail ast-volleyball-request@lists.cam.ac.uk. Note any processing is done by a real person rather than anything automated, so expect a small delay; also, the list membership is only updated once a day, so you may miss a couple of mails or get a couple even after you've (un)subscribed. If you're mailing from a different address from that with which you're subscribed to the list, please make it clear which address you're subscribed to the list!
Any other problems with the list should go to ast-volleyball-managers@lists.cam.ac.uk. If that doesn't work, try either Richard or Will instead.