Account: People appearing on the right that I do not know. How to remove?

[Metéora]

The title pretty much sums it up. I haven't signed in from a facebook account, so I literally have no friends added on here, which is how I like it. Yet I seem to have two people showing up to the right that I haven't got a clue about. Who are they and why are they showing up? And more importantly how can I get their "so and so is listening to -" off? o.o

(Didn't know where to post this, so if it's in the wrong place can you move).