Vice versa is also disallowed. Exchanging newwind items for a newwind rank is the only exception to this rule. Arranging an IRL trade is also disallowed.
Abusing bugs before or instead of reporting them will not end well for you. If you find a bug, duplication method or technique with means to generate value at a rapid rate it must be reported immediately. (Carpet/rail/TNT duping is allowed)
Do not share Linked Personally Identifiable Information of other players without permission. Do not hack accounts or blackmail for newwind items.
While this is not disallowed as such, if an account that you have used in the past is banned, you can automatically become banned.
No-one wants to see that.
Bans generally follow the format:
1st ban: 30 days + player-data file wipe.
2nd ban: permanent ban.
The rules above can change depending on a number of factors, so players are recommended to look at the rules page regularly.