I have a friend who works the emergency telephone line and is getting increasingly frustrated with calls regarding Facebook. A typical call will have the caller complain that, "[person x] has written something horrible on my wall!" So he says, "hang on? They've written on your wall? So you're friends with them?! Just un-friend them!"

In fact in a recent review he was told off for groaning loudly on the telephone when someone mentioned Facebook.

However, you can see that if Google+ continues with it's desperate push for market share like this, there will be more and more instances like that in the article. People really won't know how to properly eliminate others from the online social lives, as easily as just "un-friending" them.