There is different way to find out an information or new things on Internet. There is thesearch engines such as Google, there are also the encyclopaedia like Wikipédia or the forums which are specialized on a subject.
Wikipédia is as a dictionary it gives definitions of a word or a concept. Just like forums informations available on Wikipédia given by voluntary Net surfers who wish to feed the website. It is the crowdsourcing. iStockPhoto is working on the same principe. This is the web 2.0
User Generated Content refers to medias wich are producted or created by the users themselves. They often use freeware or opensource. It a way to facilitate collaboration between individuals throughout the world. They build collaborative website each other
