One day, when you're not paying attention, your friend says to you, in a tonguetwister, "ifyoudontmindmelookingthroughyouraddressbookandcallingeveryonesaywhat?"
"What?" you reply.
"Nothing.", says friend.
Later that day, when you're not looking, your friend copies all the numbers out of your address book and starts calling everyone. If they pick up the phone, friend says:
"Good afternoon, Friend's Name, Your Name said you'd be interested in my new social network, would you like to sign up?"
If you found out that this had happened, would you still be friends with this person? Would you still talk to them? Would you still want to know what they have to say?