Online+collaboration+websites

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**Online collaboration**
What is Online collaboration? Online collaboration is a web site which can be helped a common task by other people.

People can help common tasks with others, so the tasks get better contents and the disadvantages of the tasks can be amended into the tasks including better contents than before.
 * The advantages and disadvantages**

The majority of people use online collaboration such as [|www.google.com] and [|www.yahoo.com].
 * Who uses Online collaboration?**


 * History**


 * Examples**