This document discusses the concept of an "Internet operating system" and how various online applications and services are contributing to its emergence. Some key points include: - Many popular websites and apps like Craigslist, Wikipedia, Google, and others are helping to build an Internet OS through their use of open source software and ability to aggregate user-generated data. - This Internet OS will consist of various "subsystems" centered around data types like location, identity, time, products, etc. that will provide increasingly transparent services across devices. - Three types of data sources that will feed this OS are namespaces (unique identifiers), primary data, and derived meanings extracted from user data. - As more user