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: Comment License, Since Last Visit, WP Grins, 404 Notifier, Shortcut Macros, Delink Comment Author, ShareThis, Link Harvest
6 Months
Sep 25, 2007WordPress 2.3 Plugin Compatibility
Also in projects: Comment License, Category Overload, Since Last Visit, WP Grins, 404 Notifier, Articles, Shortcut Macros, Delink Comment Author, ShareThis, Link Harvest
9 Months
Dec 13, 2006Building alexking.org 2.0, part 7: Plugins
Nov 9, 2006Old Post Alert 1.0