I've been lurking around the Meetup.com site for a couple weeks. I couldn't seem to find a generic "digital collaborative art" group to meetup with (go figure), so I requested they instigate one bearing our beloved monikker. Here it is!
International SITO Meetup Day <sito.meetup.com>
If you're unfamiliar with Meetup.com, it's basically a site that allows you to sign up for various interest groups and meet with those groups once a month. You can vote on venues and agendas and upload "minutes" and photos. It's a good idea.
HyGrid Unplugged, anyone?