Portal
Appearance
Portals are pages intended to serve as "Main Pages" for specific topics or areas. Portals may be associated with one or more WikiProjects; unlike WikiProjects, however, they are meant for both readers and editors of Wikipedia, and should promote content and encourage contribution. Portals are situated in the a special "Portal:" namespace.
The term portal may also refer to the point of entry to specific Wikimedia projects, like http://www.wikinews.org or http://www.wikipedia.org. See project portals for the list of current portals.