 The phrase "Elo rating" is often used to mean a player's chess rating as calculated by FIDE.However, this usage is confusing and misleading because Elo's general ideas have been adopted by many organizations, including the USCF (before FIDE), many other national chess federations, the short-lived Professional Chess Association (PCA), and online chess servers including the Internet Chess Club (ICC), Free Internet Chess Server (FICS), and Yahoo!Games.