Although this is up right my alley, I have not carried business cards in 20+ years of business! All of our clients are met through referrals from our existing client base.
There is a few reason we do it this way!
#1- We could sell eg: 10million a year, but if we can't collect 9.9 of it, we're in trouble! We find (been there ,done it, we still get cold calls) there is usually a reason they are leaving there existing supplier and are hot to trot to come to us! Sometimes service etc, but monetary issues seem to be up at or near the top! A bad sign when they will not give up the current suppliers as a ref! Alot play the 90/120 game with various suppliers! Our suppliers are payed within terms and agreements!
#2- referral clients have tendancy to pay their bills and pay them on time!
#3- it keeps the relationship very personal!
#4- it also allows us to insure the client is gets looked after!