I got some new business cards from work the other day, and they came in the box direct from the printer, which along with the usual ad for themselves included an instruction manual for the cards. Admittedly much of the advice involves giving out as many business cards as possible, something they might be expected to encourage, but there were a couple I wouldn't have guessed. Some choice examples:
Insert A Business Card When Paying Bills. Bills contain advertisements. Why can't you advertise your skills or services the same way? Insert a business card with you payment. You may not think anyone who opens your credit card bill payment can help you - NEVER underestimate the power of networking. As the movies 6 degrees of separation points out we are six people away from knowing someone of influence. You could be six people away from knowing the Prime Minister or The Queen.
Ask For Referrals. When giving a business card people will feel more comfortable if you say "If you know anyone that could use my services, give them my card" [...] This always places you in a better position - they will feel better about helping you and you should give them at least two cards.
Use Proper Business Card Etiquette. When you give a business card, ask for a business card. When given a business card don't just take it and put it in your wallet. Make the person feel important by looking at their card for a few seconds - you may see something that could be a topic of discussion. Write comments on the card such as date, location and common points of interest. These comments will prove valuable when following-up with that person. This also demonstrates a sincere interest in the other person. Only then should you place the card in your wallet.