CopySpeak.org: How to talk about copyright?

public domain

This work has passed into the public domain”

Document has been published in the public domain”

/used:/

Correctly to identify works that are not restricted by copyright

Incorrectly in the context of any information that is publicly available

/recommendations:/

Promote the word in the correct meaning to rise awareness of the importance of culture not restricted by copyright law

Indicate that not all publicly available materials are free (as in freedom) to use