Packt are offering discounts for their eBooks and Videos today – for their Day Against DRM.
You can find out more details here: bit.ly/1q6bpha.
You can download my Magento Shipping How-To book or Magento Search Engine Optimization for only £5.93 ($10).
DRM is an acronym for Digital Rights Management – put simply this is the enforcement of restrictions on goods that are sold digitally. For a great breakdown please this website.