About.com: Adoption Forum
Five forums for adoption, adoptive parents, adoptees, birth parents, and blended families.

Yahoo! Groups : Deaf Adoption
Unmoderated list for discussing the adoption of deaf children.

Birthmother Buddies
Forum for birthmothers and friends. Includes stories and support.

Older Child Adoption
Discussion board dealing with the issues surrounding the adoption of older children.

AdoptionClips
News clipping service for those interested in adoption related issues (with an emphasis on the United States).

Fertile Thoughts
Various forums on related topics.

Adoption Forums
Group of message boards dealing with a variety of adoption topics and issues.

Fertilethoughts: Adoption
Message board featuring general and country-specific forums.

AdoptionForums.org
Message board with several forums. Registration is required to post.

Parents.com: Adoption
General message board. Registration is required.