Well lets see... you can JUST put your contact info on the card and HOPE people will remember they have your card, look in their Rolodex, all at a time when they decide they have a need for your type of service.
You can use the back of your card to make a statement that will drive their curiosity to your website for more info. You could, right on your card, make them an offer they can't refuse....something..anything... to initiate the fist step in the business relationship. Is that so important? ...well...if that first step doesn't happen...none of the next ones ever will.
Your business card is one of your best opportunities to set that potential client in motion toward becoming a customer.
Taking an aggressive, pro-active approach to any of your marketing, will always net better results than a passive approach. Always.
"please come see me when your ready" ....bzzzt ! ...fail !
"Here is why you will benefit from me the most, right now" ....ding ! ...succeed.
There are some o f the best marketing ideas ever compiled in the business card section of www.myezprinter.com
good luck on your venture