This is the yin to the Folsom St Fair's yang. Instead of black leathers, think white sweaters. Instead of whips and chains, think country & western dancing and hot dog booths. The Castro St Fair was started by gay political icon and city supervisor Harvey Milk in 1974 as a way to put the nascent gay community on the map. The fair succeeded beyond his wildest dreams, and an estimated 150,000 people now show up. Proceeds fund a variety of queer- and AIDS-related nonprofit groups. The fair is an all-day event, with nonstop bands, emcees and speakers. The primary activities are endless cruising and shopping, the latter being the favorite activity of the somewhat more conservative gay men and lesbians who attend. Yes, there are gay white male clones out looking for action, but by and large the event is more middle of the road than SoMA's Folsom St Fair.