Jagex has put in place a number of rules for player conduct, such as rules against offensive language, scamming, and bug abuse.To enforce the rules, RuneScape money uses three types of moderators: Jagex moderators, who are actual Jagex employees; player moderators, who are trusted ordinary players that enforce the rules within the game; and forum moderators, who are trusted players who police the game forums. On the forums, Jagex moderators are identified by gold crowns and backgrounds on their posts while forum moderators have green crowns and backgrounds; in game, Jagex moderators have runescape gold crowns next to their names in chat while player moderators have silver crowns. In addition, any player has the ability to report rule-breaking using a "report abuse" feature; misuse of this feature can result in action being taken against the reporter. There are also rules prohibiting the use of third-party software to play the game, known as macroing, and the sale of game items for real runescape money, known as real-world or real-money trading.In an attempt to stop cheating, Jagex made direct interaction with the client very difficult, and established rules against the practice.In response to continued gold farming—exploiting repetitive elements of a runescape power leveing game's mechanics—Jagex issued a statement condemning real-world trading. In the statement, they also claimed that they were seizing billions of gold and banning thousands of accounts every week for cheating. Nevertheless, real-world trading and macroing activities still continued. From October 2007 to December 2007, Jagex began a war on real-world trading by releasing a series of runescape gold drastic updates to restrict unbalanced trades. These updates established the Grand Exchange, limited the value of items staked in duels, removed player killing from the Wilderness, made valuable player drops invisible to other players, introduced gravestones for the items of dead players, and instituted the LootShare, CoinShare, and player-assist systems.Collectively, these changes were designed to make it extremely difficult for real-world money sellers to distribute gold and items to players.