For additional privacy, you are welcome to remove your account's Personal Details (Location, About You, etc.), your forum signature, and any social media names in the Contact Details section, since this information is visible to the public for both active and inactive MacRumors accounts.
If you are watching any forums or threads and asked for email notifications, and are no longer interested in receiving those messages, unwatch them by going to Watched Threads or Watched Forums, selecting the items, and choosing "Disable email notification" or "Stop watching" from the right-hand drop-down. Any other email you receive will offer an unsubscribe option.
If there are exceptional circumstances, such as an employment contract, that require that your account be canceled to prevent you from logging in, use the Contact Form to let us know. We'll probably direct you to this FAQ section unless you tell us you've already read it.
As stated in the Registration Agreement, canceling an account does not remove previously made posts from the forums, nor quotes of those posts by other members. If you are concerned about information in one of your previous posts (e.g., it contains too much personal information), you can edit the post yourself or report it to the moderators and ask that it be deleted. You should not edit or delete large numbers of previous posts, since that may leave thread discussions "broken" or confusing to those who read them in the future. Doing so can result in your account being suspended. Let us know what the problem is and we can probably help.