Taxi1010.com http://www.taxi1010.com/
Ideas, vocabulary, and daily comeback for defending against verbal violence. Also connects verbal attacks with underlying fallacies.
World Verbal Self-Defense League http://adrr.com/aa/
Overview of "the gentle art of verbal self-defense," as defined by Suzette Haden Elgin, from organization that also sells her tapes and books. Includes a section for children.