Here's a fascinating video on how the basic building blocks of a computer can be made with some pulleys and weights. http://vimeo.com/93042377 and on the same note - a computer that can add up numbers, made from dominoes! https://www.youtube.com/watch?v=OpLU__bhu2w  

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Gmail changes how it handles images

Gmail recently announced a change to the way it handles images. This change has caused much consternation in the email marketing community as to how it will affect the reporting of open rates on emails. The number of times your email is opened gets tracked by the use of a tracking pixel image, does this change affect h

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