Collaboration or cooperation – beyond the scope of this activity, but an interesting discussion, nonetheless.
Many people are comfortable cooperating – sharing, linking, etc. their work with the work of others. Cooperation – In my work, I reference your work. You are free to produce something of your own, based on my work.
True collaboration is more complex and difficult to achieve – where participants have the same goal and are willing to work together to produce a single product. It can and does happen, but not nearly as often as people think. Most people don’t want other people messing with their stuff, even if they are willing to take from others and share their own work.