Tooling

FlowingData shared their most popular posts from April 2011, including topics like gas prices and sorting algorithms. via FlowingData.

Zappos used Amazon Mechanical Turk to proofread product reviews in hopes of improving review quality to increase sales.

via The source of this content is Boing Boing.

The weekly endgame study is not available, as the page returns a 404 error. via http://www.chessvibes.com/weekly-endgame-study/weekly-endgame-study-214/

Amazon has launched its own Android App Store, directly competing with Google's Android Market. The store features a "Test Drive" option that lets you try apps in your browser using emulated Android on Amazon's cloud.

We've calculated pi to over 6.4 billion digits, but you only need 39 to calculate the universe's circumference with atom-level precision. via kottke.org

TUAW is a website with news and reviews about Apple products and services. via The source of this content is TUAW.

Security research firm Vulpen hacked Apple's Safari browser in just 5 seconds at the Pwn2Own conference. Google Chrome and Firefox remained uncracked.

This profile from April 2011 discusses Dorsey's time as co-founder of Twitter and his then-new venture, a mobile credit card system called Square.

via @longform

Amazon Prime members can now stream around 5,000 movies and TV shows for free, though the selection doesn't include many new releases. via kottke.org

A terrorist-catching technology led to an eight-year con of the U.S. government by computer programmer Dennis Montgomery, and now officials are trying to keep it all under wraps. via Schneier on Security

Runloop is a jQuery plugin for creating complex animations with custom keyframes and code execution. via GitHub

Artist Xavier Antin's "Just in Time" project uses four printing techniques—dating from 1880 to 1976—to create full-color books, and you can see it in action in the image at the link. via kottke.org