Some rules I typed off of POL. There is much more than these but these are the main ones that reflect day-to-day activities.
The following examples are prohibited behavior in FFXI. In addition, please refer to the Rules of Conduct section of Service and Support for examples of prohibited bevior in PlayOnline.
-Using another person's handle to impersonate them or deliverately mislead other players
-Using another player's PlayOnline ID
-Stalking behavior
-Using language that is not approriate for a public place
-Deliberately disrupting conversations, or dominating the log window, in order to exclude others from chat
-Deliberately flooding the chat windo log with say, shout, or tell message that are unrelated to gameplay
-Taking advantage of programming errors, such as bugs/exploits, for any reason
-Using any programs not specified or provided by SE
-Using third party equipment and/or programs controlling in-game characters without being physically present in front of the game terminal (i.e. using "bots")
-Using words considered to be offensive, or words that could mislead other players (such as names of products, groups, or companies) for character and/or linkshell names
-Ignoring the directions of any GM
-Engaging in fradulent acts within the game. Fradulent acts such as deliberately breaking a promise, deceiving other players, or conducting an exchange unfairly, can destroy trust inbetween players and inhibit the health growth of the in-game community. Such acts are, therefore, strictly prohibited. Players found to be engaging in such acts will be penalized in accordance wit the POL Member Agreement. In addition, all records of those players in question will be thoroughly reviewed, and all items and gil obtained through such acts will be onfiscated.
-Harassment by MPK, shadowing, etc. MPK (inducing monsters to attack other characters), unilateral shadowing, continually sending messages or items to the recipient, or deliberately obstructing other players is strictly prohibited.
-Engaging in actions that disrupt other players. While playstyles in FFXI may differ amongst players, any behavior that markedly disrupts other players is prohibited. when such a behavior is observed, a GM may order you to discontinue such behavior. When this happens, please promptly obey these orders. The following are a few examples of such behavior.
*Gridlocking
Crowding commonly visited places and/or blocking popular pathways for an extended period of time in masses, or any such behavior that makes it too difficult or impossible for other players to visit such places or go through such pathways, may be deemd an act of gridlocking.
*Monopolizing monsters and obstructing battles
Preventing other players from engaging in battle with certain monsters and/or obstructing other player' battles with certain monsters is considered to be disruptive behavior. For example, monopolizing NMs which are popular targets amongst players, for extended periods of time is a clear example of disruptive behavior towards other players.
*Preventing progress of missions and quests
Any action in addition to monopolizing certain monsters, occupying certain areas, and/or posessing certain items for extended times that makes it too diffiuclt or impossible for players to complete misssions and/or quests is considered to be disruptive behavior towards other players.