There's an even bigger, much more interactive site of gay and bi longhairs: BROS Online. It began as an Internet version of a '90s 'zine that has since folded. I've been active on this group for over four years. And I recently alerted its members about this HipForums board.
One caveat: Most of the members of BROS Online are aging Baby Boomers like myself -- and only a few can actually be called "gay hippies." The groups draws longhaired gay and bi guys from all walks of life.