Four short links: 17 February 2012

Predictive Surprises, Javascript Checking, Web Caching, and Security Through Clinical Kills

  1. How Target Figured Out A Teen Girl Was Pregnant Before Her Father Did — predictive analytics moves faster than family communications. (via Sara Winge)
  2. JSHint — a tool to detect errors and potential problems in JavaScript code. (via Hacker News)
  3. Web Caching Tutorial — explanation of the technical ins and outs of web caching.
  4. Gatekeeper — Apple’s new app security technology for Mac OS X. Identity, general purpose computing, security, and third-party kill switches all in the one technology. (via John Gruber)
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