Hacker News on 21 September 2012

• Apple accused of ripping off famous Swiss clock design
• Tent v0.1
• Google Maps' advantage over Apple Maps
• Why Your Customers Would Be Happier If You Charged More
• Large Investment in OpenStreetMap from Knight Foundation
• What Business is Wall Street In?
• My Brush With a Patent Troll
• What are imaginary numbers?
• Show HN: Learned Objective C as a high schooler and made this iPhone game
• iOS6 breaks long polling