I suppose I am so unobservant that I did not notice any "cc" on websites, and since I didn't even notice, I did not wonder what it meant. I am now hoping that teachers who do internet-based projects with their students know all about Creative Commons and copyright laws because this will definitely impact student projects. Students will have to be able to take what they find on the net and add value to it before they can publish to the web. And knowing whether or not value has been added to someone else's work is so subjective! I know now that I will be extremely cautious in what I bring from the web into my own presentations!
Since this is my first experience with Web 2.0, I haven't used any video or audio clips from the web. I have, however, used some photos from Flickr and another location before I knew about copyrights and such. I thought that if it appeared on the web, it was public domain! I guess I'm in a lot of trouble!
Coming from a Web 1.0 background, the only thing I've ever shared is a URL!
I'd like to think that I own the materials I produce, but as I'm finding out, I probably don't! As a retired teacher, many of the lessons I prepared for my students came from the ideas of others. I took those ideas and expanded/edited/modified/adapted them for my specific needs. Do those lessons now belong to me or do I share/own them with others? I have no clue from where most of these ideas came! Can I now share my lessons with others without fear of copyright infringement? This "Thing" has opened up more questions than it has answered!

