Whether or not you have been using WP RSS Aggregator for a long, you could come across a particular piece of content that you would like to remove from your site and never see it imported again.
By default, once WP RSS Aggregator deletes a post, it removes it from the site. However, once the feed source from where that content was originally imported runs a new fetch for new items if that content is still in the RSS feed, it will be re-imported.
That's not what you want.
That is why we introduced the Blacklist.
By using the Permanently delete and blacklist action on a post, it is deleted from your site and added to the Blacklist. Any piece of content that is on the blacklist will never be re-imported again, no matter what. The only way to re-import it would be to remove it from the blacklist and re-fetch it from its original source.
