Now you can use an API to find out once and for all whether you are among the living. The U.S. Social Security Administration maintains a "death index" to prevent fraud. CDYNE Corporation subscribes to the updates and has opened the index up with a fee-based API (details at our Death Index API profile).
Sometimes it takes a little human intervention to make semantic applications easier to build. The Guardian newspaper has augmented its Open Platform API with unique identifiers for bands and books. In turn, the company has simplified the process of creating a mashup that uses multiple sources to focus on a single work, which may help its content spread farther.