Wikipedia and Encyclopedia Britannica are examples of collaborate source. If we visit Wikipedia we will be able to see very simple and at the same time very interesting website with many different articles and information in it. Although Britannica is more colorful and there are many sparkling banners that attract people’s attention.
On-line encyclopedias are all available on world wide web now. But you have to find and choose the right one. Which has huge database. Wikipedia and Britannica are those that have such… Of course there are a lot of other open/close production examples; in my point of view the weblog that I have now is an example of close production, because here you cannot find anything that you need at the moment, however I hope that I will develop it and collect fascinating stuff in future 
