Kat Walsh, a person in the Wikimedia Foundation (which runs Wikipedia), said Wikipedia was easier when it was made. Today, there are many rules and it is more difficult for new people to change articles. Many people who change Wikipedia have stopped, and the number of article changers have gone down since 2006. In 2006, Jimmy Wales said most of changes on Wikipedia are made by about 500 people who "all know each other". But most of the changes are made by people who sometimes change articles, or who do not have Wikipedia accounts at all.