Instagram, twitter for photographers?

In the same week that JFL, the founder of VISA, derides cell phone photography in a BJP interview National Geographic Magazine launched its Instagram feed (@natgeo).
VISA is the great celebration of photojournalism and documentary photography, NGM is the last magazine actually giving documentary photography assignments. How did these two institutions end up on the opposite side of the fence?

I like Instagram, but I think it is twitter for photographers. It's a place to throw a quick photographic thought. Will it ever evolve into something else? And would that evolution include a way for photographers to make a living?

Follow me on Instragram @salvarezphoto

Stephen Alvarez