AMERICA'S most famous homosexual community is grappling with a perplexing situation — how to become family-friendly and still retain its legendary spirit of sexual freedom. The Castro district of San Francisco has been a magnet for homosexuals since the 1967 "Summer of Love", drawing people from across world with its gay pride parades. But things are changing thanks, in part, to the so-called "gayby boom", the increasing number of same-sex couples becoming parents. In California nearly 60,000 children are being raised by same-sex couples. In addition, heterosexual families with children are choosing to live there. The shift has resulted in...