You can use your business card to get more dates. Let's face it. Meeting the opposite sex and trying to get a date is a type of marketing, and no one who's serious about their business fails to have a business card. So put some thought into your business card.
One strategy for getting dates using your business cards involves creating business cards specifically for the purpose of using when you meet women. Instead of listing your job title, you might use something like “Available Single Man” as your title on the card. You could also include a photo and a cute quote.
On the other hand, if you work in an office, you probably already have a business card. Never just give this business card “as-is” to a prospective date. ALWAYS write something on the back of it to personalize it. You'll get a lot more calls if you do something clever with personality when handing your card over than if you just become another in a rolodex full of cards.
If you own your own business, then you have the opportunity to create any kind of business card for that business that you like. Take advantage of this and create a business card that will make you attractive to women. For example, be sure to include your photo on the business card. Women find solid red ties powerful and attractive, so if you can get a photo on your card wearing such a tie, you'll be ahead of the game already.