Hi Jill. I'm a moderator here at Work it, Mom! Just stopped by to say "hey" - we're glad you're here. My daughter is about the same age as your two (she is 18mo). I'm really liking this age because they start to talk more, which is so cute. (My girl just said "apple" today for the first time!) Anyway, here is a group that might interest you:
http://www.workitmom.com/group_momswithmultiples