On any given day, the average web user may log into as many as a dozen different social web services. Interaction with these sites could involve any number of activities including browsing photography, commenting on blog posts, planning trip itineraries, looking for a lover or updating a resume. While the sequential (or parallel) manner in which we navigate these databases and the generic aesthetic of the web 2.0 interface might suggest these sites form a unified network, that is simply not the case. In engaging the social web we voluntarily fragment our interests, social ties and demographic information in order to make them "machine readable" and allow us to participate in these communities. With these rules of engagement in mind, several recent projects speak to these conditions and explore the notion of web inventories in relation to identity, aggregation and as binding legal agreements.