I’ll throw in my two cents for meetup.com. A realtor friend asked me to join with her a few years back for networking purposes more than anything but we observed most people ended up dating someone. My take is the people who really want to get out and do the things they love and want someone to do them with are brave enough to join this group and take action. Make yourself one of those people and you’re bound to meet a few people who are ready right now to do rather than talk about what they like to do.
People gather to go sailing, canoe-ing, surfing, biking, hiking, museum & gallery hopping, new retaurant openings, favorite restaurants, movie nights, ceramics classes at a local J.C., skiing, etc. Not only will your chances of meeting a good match be higher, you’ll also have a built in social group of singles and other couples, some of them might become friends rather than acquaintances.