This is by no means an exhaustive list, but these are some of the biggest sites online. More will be added periodically. (Note: ** denotes the generic sites only, as the site has a multiplicity of support groups, and you can search by specific topic, such as international, trans-racial, geographical, etc.)

Faith-Based Sites:

Adoption.com:
Faith Based Forums
Christian Adoptions

Adopting.org:
Faith in Adoption

Christian Adoption
Trust in the Lord (articles and poems to help pass the waiting period:

General Sites (Some may have a searchable religious sub-component):

Adoption.com:
Forums

Adoption Support:
Carolyn's Boards

Adopting.org:
Adoption Support Groups

AdoptiveFamilies:
Adoptive Families Support Group

About.com:
Adoption Forums

BellaOnline:
Forums

Center for Adoption Support and Education
CASE

CafeMom**:
Mom-to-Mom Groups

ClubMom**:
Message Boards (several applicable categories listed)

Daily Strength**:
Adoption Forum

E-Mail Lists and Online Support Groups:
List of Lists

Google Groups**:
Newsgroup

iVillage**:
Message Boards (several specific to adoption)

Open Directory Project (DMOZ)**:
Support Group Listing

Yahoo Groups**:
E-Mail Lists (searchable by keyword: adopt or adoption)