[edgrimley]

Mobile has radically changed the social adoption cycle more than we've realized. Facebook is clearly the product of desktop world, where much of the information that made it valuable, particularly the social graph, needed to be contributed to the product to be effective.

The move to quickly-adopted "apps" has accelerated in mobile because the plumbing is already in place:

1. Contact list / address book Implicit network already exists, does not need to be built in the new product.

2. Location GPS takes apps beyond check-ins - adding context and information to posts. Even enabling new sorts of dating networks.

3. Media Photos and video, combined with location, contacts and persistent connections on one device make it easier than ever to include photos and video.

This combination (not to mention building on the Facebook platform) will continue to enable faster developing and more narrow focused "networks".