Dear Snap-D, I have about 20 years’ worth of other people’s business cards sitting in my desk drawer. What do you suggest I do with them?A: Go through the cards and keep the cards from the people who are worth the follow-up. There are business card management computer programs and apps that read and scan any card within seconds. Some can scan several cards at once and also read many languages. Once you have the contacts in your system, follow-up with them — connect with them on LinkedIn or schedule a …