Adult Twins
   A place for adult twins to talk about the trials and tribulations of being a twin. Lots of twins to chat with.
   http://groups.yahoo.com/group/adulttwins/

All Twins Here
   A list for twins to gather and chat about experiences, funny stories, and other things.
   http://groups.yahoo.com/group/all_twins_here/

Fraternal Twins
   A place for fraternal (non-identical) twins to gather and chat about being twins.
   http://groups.yahoo.com/group/FraternalTwins/

Homeschooled Twins
   A list for people that are homeschooling their twin children.
   http://groups.yahoo.com/group/HomeschooledTwins/

Scrapbooking Twins
   Scrapbooking list for twins (or multiples), parents of twins, or anyone interested in twins layouts, and page ideas.
   http://groups.yahoo.com/group/ScrapbookingTwins/

TWINteresting
   A twins message board that has forums for discussing multiple births, parenting, breastfeeding, free stuff from companies, and general conversation.
   http://www.twinteresting.com/forums/

The Triplet Connection Multiples Forum
   Forum for parents of twins, triplets, quadruplets, quintuplets, sextuplets, etc.
   http://tripletconnection.org/triplet_forum/dcboard.php

Twin Talk Bulletin Board
   Talk about anything from raising twins, to scientific news, conjoined twins, and naming twins.
   http://www.twinstuff.com/twintalk.htm