Old Post Alert shows a banner in your comments form for posts more than a month old. The banner reminds the commentor that there may be newer information available later in the blog. This may cut down on comments that are irrelevant due to more recent developments.
Mar 30, 2008WordPress 2.5 Plugin Compatibility
Also in projects: WP Grins, Since Last Visit, Comment License, Link Harvest, ShareThis, Delink Comment Author, Shortcut Macros, 404 Notifier
6 Months
Sep 25, 2007WordPress 2.3 Plugin Compatibility
Also in projects: 404 Notifier, WP Grins, Since Last Visit, Category Overload, Comment License, Link Harvest, ShareThis, Delink Comment Author, Shortcut Macros, Articles
9 Months
Dec 13, 2006Building alexking.org 2.0, part 7: Plugins
Nov 9, 2006Old Post Alert 1.0