Hacker News on 4 December 2008

• Ever wondered what the 'Free Public WiFi' networks you see everywhere are?
• Python 3.0 Released
• How To Spot a Breakthrough: Tips from Early Amazon Investor Nick Hanauer
• The case of the 500-mile email
• Dave Ramsey: "Why We Don't Take Credit Cards"
• Hacking your food supply
• Argentina's coin crisis
• Tipjoy (YC W08) now allows payments via Twitter
• Forget Rock Stars, Gurus, Ninjas and Zen Masters
• Hiring is hard