Web 2.0 refers to websites that emphasize user-generated content, usability, and interoperability. Key characteristics include social networks that allow information sharing, folksonomies that apply user-created tags to organize content, and content that can be easily reused on different sites. Examples include Google Maps, YouTube, Facebook, and Wikipedia. Web 2.0 sites often use a "perpetual beta" model where they frequently release updates based on user feedback to continuously enhance features and fix issues.

1. Web 2.0 Overview What makes a product Web 2.0?

2. Web 2.0 Overview The combination of online social networks, folksonomies, web content, and content hackability / reuseability Buzzwords: Wiki, blogs, RSS, Open / web APIs, perpetual beta, tags, some rights reserved, the long tail, badges, network effects, ratings, OpenID

3. Definitions Social network – online social structure made of nodes which are individuals Folksonomy - collaboratively generated tags that categorize Web content Hackability / reuseability – content viewed in one online location but created / hosted elsewhere; components of a mashup

4. Definitions (con’t) Wiki - a website that allows visitors to easily add, remove and edit content Some rights reserved – allow hackability and remixability without allowing pure resale Network effects – the value to a potential customer of the number of customers already using a service

5. Definitions (con’t) Ratings – Content valuation based on explicit (member provided) and implicit (centrality eigenvector) scores OpenID - a decentralized digital identity system RSS - a simple XML-based system that allows users to subscribe to online content

6. The Long Tail A statistical distribution where the low amplitude population outnumbers the high amplitude population Many small groups can be more profitable than a few large groups assuming a low group acquisition and maintenance cost

7. Web 2.0 Examples Google Maps, Google Adsense, MySpace, YouTube, Zillow, Zebo, Jobster, Vimeo, Del.icio.us, Digg, Skype, Feedburner, LinkedIn, Frappr, HousingMaps, Odeo, Facebook, Wikipedia

8. Traditional development Waterfall Spiral Design Develop Test Requirements

9. Web 2.0 (Perpetual Beta) Waterfall Perpetual Beta Development Costs Design & Develop Test & Release Feedback & Requirements

10. Perpetual Beta (con’t) Bug New Feature New Feature Enhancement Bug Enhancement Enhancement Enhancement New Feature Bug Maintain a queue of bugs, new features and enhancements and operate on a fast (every two to four weeks) release cycle

11. Typical Systems Software Linux, Apache, MySQL, PHP (LAMP) Alternatives – PostgreSQL, Java

12. Software Development Offshore Agile development Product management in U.S. Target Platforms - Web, Email, RSS and mobile UIs

13. Contact Andy Forbes [email_address] 703 201 4269