A bunch of us generally hang around in IRC (the original chat room on the internet!), usually there are a couple of people talking or matchmaking for GGPO or whatnot.
If you are IRC savvy, join us on EFnet #NZism
If you need a bit more help, try:
1. Go to http://chat.efnet.org
2. Change your nickname
3. In the "Channel" dropdown box, select "Other"
4. Type in "#NZism"
5. Click Join
6. Commence talking
You can alternatively use MIRC or mibbit or all kinds of other clients if you prefer.
Idle away!
You can also try this link as well. Just replace the "NICKNAME" text to your chosen name.
http://chat.efnet.org:9090/?nick=NICKNAME&channels=%23nzism&Login=Login# (http://chat.efnet.org:9090/?nick=NICKNAME&channels=%23nzism&Login=Login#)