Simple Go Language application that scans your FeedWrangler feed list and can delete feeds which have not had a post in X days
Also tests each feed to see if the feed URL resolves and if not can delete the feed
Developed using golang version 1.2
Once you build it run via the command line, using options
-email Required, FeedWrangler account email address
-password Required, FeedWrangler account password
-client Required, FeedWrangler client key from https://feedwrangler.net/developers/clients
-deleteAge Optional, Delete feeds not updated since X days, default 300
-commit Optional, Commit feed deletes to FeedWrangler, default false