Re: Who uses??
I don't have cards for metal detecting but I have regular business cards from work and since I usually keep the detector in the work van, if I stop to get permission from someone, I sometimes will give them a business card. Just to show them that I am a regular, honest guy. I gave one to a guy once who told me that he couldn't give me permission but he would talk to his fire chief and they would call me back... they never did, so I just kept going back until I ran into the right person and got permission face to face. That site yielded a 1929-S Merc.
Terry- do you get alot of business from those cards? I've never helped anyone find anything they lost. Though I offered once, but the guy didn't trust me, I'm sure. He claimed to have lost a $20 gold piece that his grandmother gave him, but he wouldn't even take my number.