This plugin allows you to order posts by context (i.e. if you don't want to order posts by date).
0.3 (2007-09-10) - Fixed up some issues with next and previous links not changing the page offset.
0.2 (2007-05-13) - First stable release. Have added images to indicate ordering direction, instead of the +/- buttons
0.1 (2007-04-28) - Preliminary release.