But bro Wikipedia too has lots of staff and moderators to monitor the Vandalism that could possibly occur to the less known or less popular pages which can be created or edited by anyone. But when comes to the important sections, the page is protected and monitored constantly and any edits without valid reference or source will be undone immediately and if the member does it repeatedly he would be blocked including his IP Address. I have been an editor on Wikipedia for quite sometime but yes sadly the little known or little important pages suffer lots of Vandalism which creates this impression among the public including myself. But the protected pages with valid reference brings so much value too.