One woman's online dating gold mine can be another's graveyard. It all depends on where she lives and what she's looking for. While I doubt few of us are signing up on a BeautifulPeople.com with shallow intentions, people on different sites do come with varying motivations. Some sites are known to have more marriage-minded members, while others will hook you up with people of a similar religious background. When it comes to online dating, how do you decide which dating site is your perfect match?