It'd be nice if the SIGs listed here:

  http://www.ros.org/wiki/fuerte/Planning

each had public mailing lists and links to signup/archives on their
wiki pages.  I've been urging various people to
get involved with SIGs that I know are relevant to them, and often it
is difficult to tell how to get involved
other than adding one's name to that list on the wiki page, which
seems potentially lossy...

-t