We use this mailing list to coordinate meetings and discuss PalmOS related topics. To join, simply enter your e-mail address in the form field (where it currently says "enter email address"). Delete that text, type in your complete and correct e-mail address, and click the submit button.
Joining this mailing list is currently the only "official" thing to do to become a member of the group.

Once you're a member of the list, you can go to the list home page at Yahoo! Groups to make use of the features offered by Yahoo! Groups, notably, the message archive. Note that you might need to sign up for a Yahoo ID, or associate a current Yahoo ID with your e-mail address, to access the features of the web page. You can still send and receive list messages without a Yahoo ID, though.