Microsoft BASIC for 6502 — reverse-engineering magic, this person has RE’d the assembly language for various versions of the BASIC interpreter that shipped on microcomputers in the 80s. This page talks about the changes in each version, the easter eggs, and the hacks. This, kids, is how real programmers do it :)
The Sudden Rise of Peer-to-Peer Commerce (Casey Research) — Today, business are sprouting up around the world based on the idea of connecting individuals directly to each other to trade products and services. While the idea is very much in its infancy still, like the music business at the dawn of Napster, we’re beginning to grasp the potential. Something we are tracking at O’Reilly as well.
The Sensor/itive Side of Android (Luke Wroblewski) — lots of details about sensors in Android, from a Google I/O talk. Sampling rates change between devices. The data has variance and static because it comes from cost-effective components for mobile phones not robust and industry-grade sensors.