Since EUOL wanted it moved I'm obliging.
So what is it about CC that makes people think it's better and more legally sound then regular copyright?  Why in the world would you want to go with something more restrictive then regular copyright?
http://www.indicare.org/tiki-read_article.php?articleId=118
1.) "Classical Copyright" vs. "Creative Commons"
CC licences suggest, that the main feature of classical copyright is "All rights reserved", whilst the approach of CC licenses is "Some rights reserved".
This juxtaposition is simply false. Copyright provides a list of exclusive rights to the rightholder, from which he decides which ones he wishes to "sell" or grant and which to retain. The "Some rights reserved" concept is therefore not an alternative to, but rather the very nature of classical copyright.
Although in the deeper pages of their website CC acknowledges that their licensing system is based on copyright itself, you just need to write the following words: "Creative Commons" and "alternative" into Google to find out how many people do not recognize this legally evident acknowledgment, and how many people are rather impressed by their suggestion.
and what about the downsides?
You can read the Commons Deed form, the "Frequently Asked Questions" or "Licenses explained" pages of the CC website (cf sources), you will not find some of the most important elements of CC licenses. You can only find this information on the bottom of a deep page:
"Every license
– applies worldwide
– lasts for the duration of the work's copyright
– is not revocable"
They are effective worldwide, and you can never change your mind, which is anyway clearly forbidden by a number of copyright acts.
Also CC has only been upheld in one court ruling, and that was in the Netherlands.
What I want to hear, and not from random fanboys are blog articles but from an actual lawyer, is what I would gain from using CC over regular copyright? I just quoted and linked to one so lets get out of the realm of internet "he said, she said" and get down to the legal facts.