Although I do not have enough traffic to have my own active boards, I will point you in the direction of some other gender related boards.

Gender Equality Forums

Stand Your Ground Forums - Forums talking about various men's issues, with a focus on domestic violence.

ifeminists Board - An intellectual board that looks at both sides of gender equality.

Youth Noise - Youth board about "ending the isms"

America's Debate - Semi-active debate about gender issues.

Forums From One Perspective

Feminist Parents - Active forums about feminst parenting.

Feminist Planet Forums - Semi-active feminist forums. Seems to be full of adolescents.

Cool Tools 4 Men - A discussion forum with a radically male perspective.

Debating UK - "Feminist Only" posting.