Make a list. Score your dates. Market yourself wisely. Find your needle.

If you're trying to cast the widest possible net to attract the largest selection of men or women, the last thing you should do is to start listing your income, political views, and the like. Avoid mentioning specific comedians, shows, or movies unless those are top-tier attributes on your list.

Good profiles mentioned characteristics that would probably be true for all of us, such as: "I want someone who will make me laugh." About Me sections with fewer than a hundred words tend to be clearly popular. Short profiles that express just enough information to pique someone's interest work best.

Make your initial contact short and sweet. Five sentences or less, or under 150 words. If someone instant messages you while you're online, go ahead and IM them back if you want. Otherwise, wait twenty-two to twenty-three hours between email contacts for the first few messages. Don't send messages while most people are sleeping, even if you're wide-awake. Shoot for business hours or just after dinnertime.

Photos should focus on your waist up, unless you have amazing legs. Then it's okay to include one or two full-body shots in your gallery. The majority of your photos should be closer up, highlighting your face. Don't stage a smile. Instead, try to laugh just before the shot is taken. Flirty smiles that don't look cheesy also work. Make eye contact with the camera. Aim to take most of your photos outdoors.

Use between three and five photos in your gallery. Galleries with more photos are more competitive, but after five they seem to pass a point of saturation and diminishing return.

Peak hours for sending a first email through the online dating system tended to be during work (eleven A.M. to four P.M.) and then just after dinner (seven P.M. to nine P.M.). I did have a few women send me a first message after eleven P.M. Those who did had an 82 percent chance of coming from a profile that had too many words.