Message Boards are used to find and communicate with other people who may be researching the same families. Used effectively, message boards are another tool in your family history research.

Popular Message Boards

FamilySearch Forums Free forums organized by geography.
GenForum at Genealogy.com.
Message Boards at Ancestry.com. Ancestry is a subscription site, but the Message Boards are free.
Rootsweb Message Boards: Same boards as Ancestry.com Message Boards, with Rootsweb banner instead.

Writing an Effective Message Board Query