If Wikipedia is mentioned, that suffices to add the link; it doesn't matter if the link has dropped off the bottom of the page. Just keep mentioning Wikipedia!
Linux Today (http://linuxtoday.com/news_story.php3?ltsn=2001-09-25-010-20-PS)
MetaFilter (http://www.metafilter.com/comments.mefi/10939) and [1] (http://www.metafilter.com/comments.mefi/11256) and [2] (http://www.metafilter.com/comments.mefi/12025) and [3] (http://www.metafilter.com/mefi/12325)
... from 45 to 64, and 16.9% who are 65 years of age or older. The median age is 39 years. For every 100 females there are 113.3 males. For every 100 females age 18 and over, ...