If you follow the link it points to a project page about the use of as of links Basically you try to keep article pages from being date sensitive however when this is unavoidable you attach a link whose target is as of yyyy where yyyy is a year This helps people to keep track of the pages which may expire so that they can keep them up to date Please see Wikipedia as of and Wikipedia Avoid statements that will date quickly for more information about these topics 03 02 20 Jun 2005 UTC