Friend's List?

Hi there, I'm new to Cata. Haven't played any WoW for almost a year, but a friend of mine dragged me back into it. Back on Rag in WotLK, there was a Friend's list. I can't seem to find it on Sarg. Am I stupid, or was it taken out?

Also, if I'm just stupid, could you, you know, show me where it is?

You can now open it by pressing the button on the chat, or you can you can just press the key bound to it (by default it is O).