GOM
living vicariously
There were a few apps that they were on, and I was missing out on. For example, "Find my iPhone", and we're all logged in, so at any time we can see where each other are. Sounds a bit Big Brother, but actually very practical with the kids. My son would be somewhere in town, you ring, he doesn't answer, you text, he doesn't reply, eventually you get "in the High Street" ...... much easier to find him courtesy of the app, because it would give a live GPS location.
IM, iCloud, it was all working so well for the other 3 sharing stuff, that it made more sense to just go with it.
OK, thanks for explanation. I believe WhatsApp does the location thing now as well.