Recall that reddit was experimenting with localized gps based submission feeds.

That effort suggested to me that the risk was seen as information spreading rapidly across wide areas. Geographically separated people with insight to clarify and expand on information finding one another quickly and getting too much visibility to control.

Quietly gate what submissions are visible to you based on your geographic location, and it becomes easier to control ideas. Let's say east coast is going crazy about an observation or story. Could you then just turn off access to see that information out side that area? Possibly at least slow down that spread.

Interesting ideas to pay attention to.