Wikipedia is a free-access, free-content Internet encyclopedia, supported and hosted by the non-profit Wikimedia Foundation. Those who can access the site can edit most of its articles. Wikipedia is ranked among the ten most popular websites, and constitutes the Internet's largest and most popular general reference work.

It says "Those who can access the site can edit most of its articles." But who has the final say? Wikipedia has a lot of articles that deal with important matters to Catholics.