Thomas Margoni and Diane M. Peters have self-archived "Creative Commons Licenses: Empowering Open Access."
Here's an excerpt:
Open access (OA) is a concept that in recent years has acquired popularity and widespread recognition. International statements and scholarly analysis converge on the following main characteristics of open access: free availability on the public Internet, permission for any users to read, download, copy, distribute, print, search, and link to the full texts of these articles, crawl them for indexing, pass them as data to software, and use them for any other lawful purpose, without financial, legal, or technical barriers other than those inseparable from gaining access to the Internet itself. The only legal constraint on reproduction and distribution, and the only role for copyright in this domain, should be to give authors control over the integrity of their work and the right to be properly acknowledged and cited.