So I was on a forum this evening and ran across a discussion about business cards. And this can be a touchy subject, not because of any feelings involved but because of how important they can be. Sure, most of the time they aren't the persons first impression of you, but they are something you leave with them for later contact - so they carry on that impression. They also need to fit in with your website, marketing, logo, and any other public image of yourself. Along with fitting in and the above, they can't distract from your image, yourself, or your marketing, in other words they can't try and do too much.
A good example of this would be the scene in American Psycho where they talk about their new cards. We laugh and make fun of it for many reasons - how serious they are taking this, how little the cards actually differ, and how they get into every small detail. However, there is a point that can be taken, and it's that their cards are exactly what they need to be. Simple, to the point, no frills (other than the font/paper), and provide contact info.
Those elements are what a card needs to be, professional, an extension of your business and yourself, and something that's not distracting.
I posted a image of my card for this reason, although it's not a great example, it's to the point, has my info, I did include a image on one side but the image is a good example of what I do, and it's not trying to do too much. Some others I've come across try to be everything to everyone, almost a mini flyer, which in some cases work but a lot of the times they are just too much and may put people off.
So my advice to photographers and businesses is the following. Keep the card simple, make it an extension of your current marketing, and make it specific or tailored to your audience.
