Internet Relay Chat (IRC)
The docteam IRC channel is #ubuntu-doc on the irc.freenode.net server. If you need to ask a quick question or rapidly discuss an issue, this is the place to do it.
There is a log of #ubuntu-doc at http://irclogs.ubuntu.com/, updated once per hour.
Mailing List (ML)
The address for the list is firstname.lastname@example.org. To subscribe visit http://lists.ubuntu.com/mailman/listinfo/ubuntu-doc. The list archive is at http://lists.ubuntu.com/archives/ubuntu-doc/.
It is possible to send an email to the Doc Team without joining our mailing list, if you have some suggestions or concerns but don't wish to join our team. There might be a slight delay as non-subscriber messages have to be passed through the list's anti-spam controls manually, but we will receive & reply to your messages!
The list can also be read with a browser or newsreader at Gmane
We have an Identi.ca group too!