Subtext — social bookreading by adding chat, links, etc. to a book. I haven’t tried the implementation yet but I’ve wanted this for years. (Just haven’t wanted to jump into the cesspool of rights negotiations enough to actually build it :-) (via David Eagleman)
Technologies, Potential, and Implications of Additive Manufacturing (PDF) — AM is a group of emerging technologies that create objects from the bottom-up by adding material one cross-sectional layer at a time. […] Ultimately, AM has the potential to be as disruptive as the personal computer and the internet. The digitization of physical artifacts allows for global sharing and distribution of designed solutions. It enables crowd-sourced design (and individual fabrication) of physical hardware. It lowers the barriers to manufacturing, and allows everyone to become an entrepreneur. (via Bruce Sterling)
The Internet of Things That Do What You Tell Them: Cory Doctorow passionately explains how computers are already entwined in our lives, which means laws that support lock-in are much more than inconveniences.