My daughter will soon be spending 18 months in the USA. We are both on giffgaff. It would be free for me to call her but would cost her £1 per minute to receive the calls, so obviously I'm not going to do it and will skype or find an alternative cheaper network.
Would it not be a good idea to offer reduced-price giffgaff to giffgaff roaming rates? It would generate some income which would otherwise be lost if skype or another network was used.