I just had a request from someone about how to join the HIA email lists (I've had a few requests over the last year or so) and thought it would make a useful post.
For the UK and Ireland HIA network, go to http://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=hianet&A=1
For the Asia Pacific HIA network, send an email to firstname.lastname@example.org with "subscribe hia-seao" as the body of the email.
For the USA HIA network, send an email to email@example.com with “subscribe hia-usa” in the subject line (see also http://www.feetfirst.info/phbe/HIA-USA-listserv ).
You should get a confirmation message that you will need to click a link in to confirm your subscription (this may take a day or so as sometimes a moderator reviews it before accepting.
You can of course join one, two or all three!