I was thinking another node would link to consumption/purchases, on-line receipts and other data would suggest more things for the user to purchase based on those purchases.

Another node may lead to all the chat conversation the user has had with work colleagues, illustrating how social interaction has become codified into data.

Or a link to a work profile and personal profile: 'An individual may choose to use more than one projected digital persona. People may present themselves differently to different individuals or groups on the net; or at different times to the same people; or at the same time to the same people. One projection may reflect and provide close insight into the person's 'real personality', while other personae may exaggerate aspects of the person, add features, omit features, or misrepresent the personality entirely.'

Link: http://www.rogerclarke.com/DV/DigPersona.html

Or even the users travel history, a globe where the user can see through travel reciepts where the subject has been.

Or even a mood node in which how a user projects how they are feeling on the internet.

Ultimately, what both requesting and requiring personal information highlight is the centrality of producing, updating, and deploying consumer profiles…. And although Foucault warns of the self-disciplinary model of punishment in panoptic surveillance, computer profiling, conversely, oscillates between seemingly rewarding participation and punishing attempts to elect not to divulge personal information. (Elmer, 2004, pp. 5-6)

Source: http://michaelzimmer.org/files/Zimmer%20Aalborg%20talk.pdf