There are two Linux/MIPS-oriented mailing lists:
This mailing list currently has the most traffic. It is especially of interest as a good number of active developers are subscribed to this list. Subscription to this list is handled via Ecartis (ecartis@linux-mips.org), just send an email with the words subscribe linux-mips. In order to unsubscribe, send unsubscribe linux-mips. For more, information see also http://oss.sgi.com/mips/mail.html.
The archives for this list are located at http://oss.sgi.com/mips/archive/
This is an announcement only mailing list to which a message for every CVS commit into oss.sgi.com, the central CVS archive of the Linux/MIPS community, is being sent. This allows following the development as it happens. Subscription to this list is handled via Ecartis (ecartis@linux-mips.org); just send an email with the words subscribe linux-cvs. In order to unsubscribe, send unsubscribe linux-cvs to the same address.
There is an IRC channel named #mipslinux for Linux/MIPS which may be found on irc.openprojects.net.