maybe like 15 idk. i love this group, cuties with cloth booties, fluff addicts (even though it's not very active), sewing diaper divas, and a few crafty/sneaky groups!
I am in 13, but there are like 4 that rarely post anything. My favorites are 30-something Moms, Depression Support, and Advice for Moms. There are a few that get really active for a few days and then die down.