Auto archive Joomla Articles based on a configurable number of days.
How to use :
Simply install the plugin from the archive file and enable it.
Configure the number of days that you want to archive from.
Choose the category (or choose all to archive all articles).
Example :
Set 30 as number of days to archives all articles in the past except the last 30 days.
Info :
The plugin runs on each page load, which is probably not best, but the sql is very quick.