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The lecture makes an important point. There is no easy answer to the current woes. I don't intend my critique (forthcoming) to be a "silver bullet". We're in the midst of a major technological transition and the future couldn't be more opaque. I respect the analysis. I don't know which business model might work.
That said, more geographers should join the conversation. The nested scales (local, national, global, etc ...) misrepresents the publics in play. In other words, the map is inaccurate.
The issued-based public might capture the diaspora communities I study. It doesn't address how the boundaries of local, national and even global are changing. The location variable is a given. Static. Frozen in time. Thus, the suggestion to "get your local community to fund local reporting" is troublesome.
How we consume local, national or global media is more akin to an issue-based public than it is defined by some contiguous territory. The political geographic legacy is still important (e.g. local spins on globalization) but there is little recognition of emerging geographies.
I'm sensitive to the displacement going on given the object of my blogging affection: Pittsburgh. I wasn't born there and I currently live in Colorado. How many Rust Belt bloggers don't live in the Rust Belt? There are communities slipping in between the media cracks. Our sense of geography hasn't caught up with our media technologies.
The building of a national community took many innovations that would allow a people to imagine themselves as sharing the same fate as a bunch of other people living far away, folks they would never meet. In a sense, this explains the troubles in Detroit. The geography of Greater Detroit doesn't exist. Yet local newspapers pretend that it does. More apropos is a world city understanding. One central business district looks like all the others. There are wealthy, cosmopolitan neighborhoods; and poor, isolated ones. We haven't even begun to think about how we might weave these disconnected places together.
Instead, we suggest the local is trending towards the hyperlocal or that the middle (national) scale between local and global is disappearing. Whatever your poison, most media innovation involves greater ties between information and place. The premium is on knowledge and utility.
I like to think of knowledge as information plus social capital (trust). It's the difference between a jobs listing aggregator and how to get the job posted that you want. The network has value, but the information is free. However, people won't value networks they don't trust.
Using today's social media for yesterday's geography is a blind alley. What new geographies are possible thanks to these innovations? The current line of inquiry seems to me to be way off the mark.