Depends on what you're looking for. I've only met a few people online (all women, no men) and the relationship didn't last over a month or two. Granted, I wasn't looking for a serious relationship, just sex. If you're just looking for sex, and nothing else, online dating sites can be useful. But you're better off not attempting to find a real relationship online. I have family members who've tried online dating sites in an attempt to be in a real relationship, and it has always, without fail, blown up in their faces.