Recent work updating the notion of the audience commodity and of audience labor for the digital era has focused on the changing character of what is sold to advertisers: no longer time or space, but user activity or key words or searches [...] These analyses are useful insofar as they highlight the shifting logics of advertising in an era in which "flow" (Williams 1974) is displaced by search, and space is virtually unlimited. Clearly traces of earlier logics of advertising remain: inserting ads in front of YouTube videos recapitulates the logic of the sale of time [...] However, the digital medium is a much more malleable and thus customizable medium--which means that spaces and times can be more narrowly framed and targeted (that is, a particular space can show one ad to one user and a different ad to another user on the same page). Moreover, online ads generate their own feedback--creating additional data that can be folded back into the process of customization. The upshot is that emerging advertising regimes are becoming ever more data-intensive [...]