Hacker News on 18 July 2014

• Now Accepting Bitcoin on Dell.com
• Filecoin – Data storage network and crypto-currency based on Bitcoin
• GoTenna – Send and receive messages even when you don’t have service
• Electric life forms that live on energy
• Programming is not math?
• “A little bit of slope makes up for a lot of y-intercept”
• Kindle Unlimited
• Anatomy of a system call, part 1
• Hacking Online Polls and Other Ways British Spies Seek to Control the Internet
• Google will stop calling games 'free' when they offer in-app purchases