How often are the images pulled? Could they be sorted by date? It would be interesting to see the flow of pictures in real time during specific events.
I've had this idea for ages, but other than Twitter (Geus was working on popped.at, but it seems to be down again) I was told that real time was not possible with the other services. If Buetol wants this to have real value then real-time PLUS being able to define a location by polygon or radius for an accurate stream is required.
I don't think it's required (I'm happy with the current state and happily using it), but, yeah, would definitely be awesome.
Polygon/radius is more of a problem interface-wise. For now I'm trying to have the maximum density of pictures (so you always find relevant things) and I think that's what people are looking for.
It's pulled directly from each API (and it's why it take a lot of time often, I do it synchronously).
I want to add sorting and real time in the future (especially for things like concerts, would be so cool). For now I keep adding APIs, I'm trying to add Facebook/Twitter/Vine for now.