Twin Talk Bulletin Board 
Talk about anything from raising twins, to scientific news, conjoined twins, and naming twins.
http://www.twinstuff.com/twintalk.htmAdult 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, and funny stories.
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/
The Triplet Connection Multiples Forum
Forum for parents of twins, triplets, quadruplets, quintuplets, sextuplets, etc.
http://tripletconnection.org/triplet_forum/dcboard.php
