Wait, what the Hell does your father get off to on the internet? You've sparked my interest now!
When I was 13 they cared a lot. My Mother was one of those "THE INTERNET'S A DANGEROUS PLACE, FULL OF WITCHCRAFT AND DARK CULTS!" type of people. She got used to it though, especially when I told her that my writing had become extremely popular on the internet (ah, those were the days, when people actually read my writing). However, that all changed when the fire nation attacked when I told her that I had been meeting up with Luck Hax (George) from these forums (of course, this was when I met him on a different forum). She did meet him eventually and found that there was nothing to worry about. I now meet up with people from online regularly and she's cool with it.