I used to be active in several local mom's groups. And one of them, my El Camino Hospital baby group (from when Dori was 5 weeks old) still gets together...less for park dates and more for potluck dinners, camping trips and girls-gone-wild weekends.
But in the age of Facebook, LinkedIn and MySpace, social networking is more important than ever, so I joined CityMommy, a San Francisco Bay Area site with message boards, directories, neighborhood groups, events and more (it's free to join). I check in daily for gossip (like Ben and Jen had a girl!), for event info, debates and news affecting families.
I know they have some competition, like Bay Area Mama, Mamasource, Moms Like Me.
What groups do you belong to? What do you love about them?