Wikipedia is the first truly democratic, unaffiliated attempt to make all information in the world freely accessible to anybody with a computer. Wikipedia is vulnerable to vandalism in newer or infrequently checked articles, but for articles that are highly trafficked, or articles pertaining to science, Wikipedia is as thorough as most textbooks.
Wikipedia is a tremendous resource for everyone all over the world. It is a free, instant source of information of virtually every available topic. Although sometimes, due to the open-source nature of the site, vandalism occurs on a particular page, Wikipedia and it's users work diligently and often instantly to resolve the problem and correct any misinformation.