I.S.A. IS:
A spiritual program.
A Twelve Step and Twelve Tradition program.
For incest survivors and prosurvivors -"prosurvivor": Someone who loves, believes, and supports the survivor in their recovery from incest, such as a family member, spouse, friend.
An anonymous fellowship.
Self-help, peer-help.
Unconditional love.
For men, women, teens.

I.S.A. IS NOT:
Conventional therapy.
A reporting agency, or hot line.
A religious movement or an educational agency.
A social service organization (it has no paid social worker or professional field workers).
A Cure, a "Cure-All," or a "Quick Fix."
An employment agency.

More info, help links & Source:
http://www.lafn.org/medical/isa/home.html