As the fine print of the application says, Facebook's trademark applies only for "telecommunication services, namely, providing online chat rooms and electronic bulletin boards for transmission of messages among computer users in the field of general interest and concerning social and entertainment subject matter" ? or at least, in an odd little exception, "none primarily featuring or relating to motoring or to cars." Go figure.
What that means, basically, is that you can go ahead and keep saying the word "face" in daily life without getting sued by Facebook. Come to think of it, neither Billy Idol ("Eyes Without a Face") nor CBS ("Face the Nation") have anything to worry about, either.
But Facebook's impending trademark could make life pretty difficult for anyone who wants to launch a new social-networking site called, say, FaceWeb, or InterFace, or ? I dunno, Face2Face.