That would be a bit rude though, seeing as how it costs money to make business cards, and if he already knows of both Badspot and Rotondo and their games, then having one of their business cards won't benefit them. It would be one less card available for someone who is a potential new customer.
Honestly I'd be pretty happy in that situation, that someone cared enough to want a card lol.
Also we have a loooot of these cards, so yeah.