This is definitely going to make uncle Steve angry. TUAW reports that China Unicom is offering to jailbreak their customers iPhones directly from the very store they sell the devices from.
Apparently the staff will gladly hack the apparent iPhone 3GS devices (the iPhone 4 hasn't been released yet), or cut the SIM card down to fit the micro size on those who have opted to buy an iPhone 4 through alternative outlets. Some stores are even going as far as saying that they will show users how to download 3rd party applications. Wow.