Exploring ideas such as creative commons is what is best about the web 2.0 program, I already know about Facebook and twitter but it is great to discover and learn about things lesser know yet far better resources like creative commons.
The CC license of this program is - people are free to share and adapt the work so long as it is attributed and is not for profit. Also that theses conditions can be waived with the permission from the copyright holder.
The Photo I chose from Flicker had var similar conditions as the web 2.0 program - people are able to share and adapt the content so long as they attribute it to the author/licensor. The one difference was that the other conditions was share alike - anyone can use and adapt the work but they have to distribute it under a similar licence.