Predictable Web of Data — a chapter of a book that never happened, this chapter covering the wonderful YQL.
Symbian: A Lesson on the Wrong Way to Use Open Source (GigaOm) — Open source can be used to inspire and complement successful products. It can accelerate momentum. What it can’t do is resurrect dying technology products.
Richardson Maturity Model for REST — A model (developed by Leonard Richardson) that breaks down the principal elements of a REST approach into three steps. These introduce resources, http verbs, and hypermedia controls. A very good introduction to REST for those who haven’t thought hard about it yet.