Web 2.0 Features and Characteristics

What Is Web 2.0: Design Patterns and Business Models for the Next Generation of Software by Tim O'Reilly

Principles, Characteristics, Features:

• Services, not packaged software, with cost-effective scalability
• Control over unique, hard-to-recreate data sources that get richer as more people use them
• Trusting users as co-developers
• Harnessing collective intelligence
• Leveraging the long tail through customer self-service
• Software above the level of a single device
• Lightweight user interfaces, development models, AND business models