Passage Summary: A company is paying customers to give up their friends' contact info, but the author thinks this is wrong because it turns friendships into a way to make a quick buck and might ruin the trust between friends.

Conclusion: Offering financial incentives for friends' email addresses is an unethical business practice.

Reasoning: This practice encourages people to exploit personal relationships for money, which risks damaging the integrity of those friendships.

Analysis: The author has a clear moral stance but needs a universal rule to make the argument stick. We are looking for a principle that connects 'risking the integrity of a relationship for profit' to the label 'unethical.' The best answer will likely state that any business practice that encourages the exploitation of personal bonds is inherently wrong. It’s the 'don't sell out your friends' rule, codified into a business ethic.