The Internet Archive wants to particularly make sure to archive pages that Wikipedians use as citations. A GSoC project last year got most of the way to that goal but never quite finished making the feed of new links for use by the Archive. Would anyone else like to take this up?
More information:
https://www.mediawiki.org/wiki/User:Kevin_Brown/ArchiveLinks
http://toolserver.org/~nn123645/toolserver-feed/cronscript.php (You could ask Kevin to make his Toolserver project a MMP or you could just write your own script.)
https://www.mediawiki.org/wiki/Extension:ArchiveLinks - would have to be moved into Git from Subversion.
http://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_(policy)&am... - there is a real hunger for this!