NetNewsWire script bleg

I have accumulated a lot of feeds in NetNewsWire but I notice that a lot of them go unread. It would be nice, I thought just now, if NNW could keep track of what feeds get clicked on and/or read and do some housekeeping with the ones that don’t hold even my attention. Perhaps a weekly culling of feeds into a tab a folder to be reviewed, and if unclaimed, unsubscribe.

But NNW Lite doesn’t have an AppleScript dictionary, it appears. Is there another way to do this?