Entries are too easily manipulated  Wikipedia entries are far too easily manipulated due to the ease at which they can be edited and the lack of official or authoritative oversight. Wikipedia is therefore subject to the worst qualities of humanity – as is shown by a number of scandals affecting the site. Entries can be deliberately vandalised for comic effect (as happens every April Fool’s Day), for commercial gain, or for more insidious purposes of libel or insult. Some of these deliberate errors are picked up and corrected quickly, but others exist on the site for long periods. Notoriously, respected journalist John Siegenthaler was libelled in an almost solely fictitious addition to an article that was was not detected for months. [1] Recently one very senior editor was exposed as a college drop-out, rather than the distinguished professor of theology he had claimed to be. [2] Such examples seem to confirm the doubts of Larry Sanger, the original project coordinator for Wikipedia. He has since left Wikipedia and written a number of warning articles about how open to abuse the online encyclopaedia is. [3] Without a more stringent, hierarchical editing process, such abuses can never be prevented, and the trustworthiness of Wikipedia’s information will always be questionable.  [1] Siegenthaler, J. (2005, November 29). A false Wikipedia 'biography'. Retrieved May 11, 2011, from USA Today  [2] Elsworth, C. (2007, March 7). Wikipedia professor is 24-year-old college dropout. Retrieved May 11, 2011, from The Telegraph  [3] Sanger, L. (2008, January 23). How the Internet Is Changing What We (Think We) Know. Retrieved May 11, 2011, from Larry Sanger Blog