[gurkendoktor]

I have no data on this - but IMHO losing the "silver surfers" weakens the ecosystem they're trying to build. The only reason I use Photostream since its inception is that my girlfriend's mom can use the iPad 1. FaceTime is another good example - it makes iDevices great gifts for parents & grandparents.

Also, have you seen how many elderly Asian tourists are using the iPad as the only digicam they can comfortably use? (Not sure if this is also a trend in other countries.) That's obviously the opposite of "cool", but these are $500 in revenue per user. The new lock screen and camera of iOS 7 are less discoverable.