If your going to say that you might as well write off the whole bible because it was written by people long dead from a different time then ours. You cant change what you don't like in the bible. Especially if its the word of god. You CAN disobey it.
I don't view facebook that way. I may say happy birthday there but I always try to make plans to see that person, if I can't then what can I do?
Kids like to get out with there friends facebook doesn't change that.