At a recent networking event we noticed someone working the room by
passing out business cards faster than a poker dealer in Vegas.
Later, someone told us,  "I don't know who that person was but they
gave me their card and I'm going to throw it away."  A perfectly
good networking opportunity wasted.

If you've ever attended a networking event and arrived home with a
stack of unwanted cards from people you can't even remember, you
know what we're talking about.  It's fine to pass out your card,
but if people don't remember you, they probably won't be calling
you to follow up, request your services, or make a referral.  

Your business card can be a great marketing tool when used
properly.  When it's used incorrectly, it's more likely to be
tossed out.  The secret to using your card to market your business
is to build a relationship first and hand out your card last.

Don't just walk up to people and hand out cards!  Take time to make
conversation.  If you don't, and the person doesn't have a real
interest in you or your service, your card is wasted.

Ask for the other person's card.  Instead of focusing on giving
your card, focus on getting to know people and when you're
genuinely interested in following up, ask for their card. 

Give a card when it is asked for.  When you take the time to make
conversation, create a connection, and ask for a card, chances are
good that the other person will not only ask for your card but also
keep it, refer to it, and follow-up with you.

Successful networking is not measured by the number of business
cards you give out or take home.  True success is measured by the
quality connections you create, not the card collection you will
never use.  Form a relationship first and use your card simply as a
reminder of you, your business, and your relationship.