via All Things D by Peter Kafka
But over time it became apparent that the usage patterns for the iPad are very different than for iPhone, at least at this stage of the device’s evolution. By and large, people leave their iPads at home — they don’t take them to work — so it’s really difficult to get someone to engage with the network during the course of the day. You lose tons of opportunities to get him or her to interact with their graph, and that’s basically like starvation for a new social network.
When the user gets home, they pick up their iPads and spend a few hours with it. That’s part of the beauty of the device; it’s very, very immersive. The underside of that quality is that, given a few hours after dinner and before bed with such an immersive device, most people will open just a few apps and spend lots of time in each (versus the dozens of sites they might visit with a laptop and a browser). If you’re one of those apps, that’s great, but if you’re not, you’re in a much more difficult competition for users’ attention. - Khoi Vinh of Mixel