Creative Commons Provides Logo For "Public Domain" Marking
This week in the "in case you missed it" category of copyright news, I wanted to respond to a question that recently came up regarding the process of identifying whether certain works are in the public domain.

Creative Commons, a not-for-profit organization dedicated to enhancing the free and flexible usage of works intended for the public domain, had previously solicited opinions on a process to designate such works. In early October, 2010 Creative Commons announced the release of the "public domain mark" (depicted above) which is intended to indicate that users of works so designated can exercise all of the rights of the work's creator (i.e. to copy, modify, distribute, perform, etc.).
While the mark may be useful for creators to designate their works as public domain, any potential users of such content should be wary: the presence of the public domain mark does not provide a warranty of originality or non-infringement.
Bottom Line - The User Assumes the Risk.
Those intending to use or rely upon the "public domain mark" to use third party content should carefully review the source material, the Creative Commons database for a form of licence with the creator and, when in doubt, contact the copyright holder or the site where the material was found to confirm the ability to use the material.
Nevertheless, in spite of taking such steps it is important to note that, without a formal licence agreement (containing appropriate representations, warranties and indemnities, etc.) users of works designated as "public domain" will be assuming a certain amount of risk as to the validity of a creator's claims of ownership and non-infringement so it is recommended that such users consider the potential costs (i.e. infringement claims) and benefits (i.e. access, availability) of using such works versus the potential value of creating or formally licensing original works from a creator.