1. Leaky Garden

Leaky Garden shows which 'walled gardens' leak, and which are watertight. Social network sites and other Web 2.0 services with usernames and logins are analyzed for the amount of indexed items in Google. How often have the usernames from the 2.0 sites been indexed by Google? Leaky Garden shows the quantity of leaks per 2.0 service.

Username queries are made via usernamecheck.com, a service that looks up whether usernames are already taken. Usernamecheck.com has been re-used in order to trace which services are being used by a particular username. Usernamecheck.com's results are scraped. Google is queried for the username each Web 2.0 site in question.   

http://leakygarden.net/ 

2. Walled Garden Data Flows

Characterizing the types of Web 2.0 data flows between three applications: Facebook, Twitter and Flickr.

3. Walled Garden User Model

This graph visualizes the appearance on the Internet of a Web 2.0 applications-user. How are separate applications linked to each other and via what devices? This visualization shows the connections between all the applications of one particular user.