We get together twice a month for general meetings [1] and potlucks, plus social events, workshops, and other special times. Our teams [2] often meet by conference call, or sometimes in person.
We do a lot of our work online [3], in email. Don't worry, we have people who will help you out if you're not super tech-savvy.
This picture was taken during one of our design workshops, and is a great image of the group in consensus. Really, though, we usually use our colored cards [4]!
Links:
[1] http://www.mosaic-commons.org/meetingsdecisions
[2] http://www.mosaic-commons.org/teams
[3] http://www.mosaic-commons.org/online
[4] http://www.mosaic-commons.org/colorcards