Collaboration, literally, consists of working together with one or more others. Wiki is known primarily as a tool for collaborative writing.

Although the word collaboration is widely used questions as to its meaning remain.
* How does collaboration differ from cooperation? (dictionary definitions are generally more or less equivalent)
* What qualifies as a collaboration? (is Wikipedia a collaboration in the same way that a work of art is when two artist collaborate face-to-face? and for that matter, does a family, city, nation or species qualify?)
* What are the defining principles or elements of this process? (understanding these might help to draw conclusions on the previous questions)

see also:
collaboration ethic, cooperation, wiki,collaborative writing

sources and resources:
collaboration - wikipedia