Hey, some people use stylized album titles (MusicBrainz does). Some user (RJ_mymusic) is manipulating the album art with a "fix your tags" image and changed the Wiki. That isn't coming from Last.fm, so ignore it.... down-vote it when it appears.
It is stylized as "...Little Broken Hearts" but known as "Little Broken Hearts". even Blue Note Records noted that and also do you see a track list in here? so it's not official and last.fm also updated Jones discography without it. check it out: http://www.last.fm/music/Norah+Jones/Little+Broken+Hearts
I don't know why people want to act like a dummy when the truth is infront of them!!! it's the wrong tag can't you see it? just go to her last.fm page and see this or how about check the wikipedia? http://en.wikipedia.org/wiki/Little_Broken_Hearts