A few days ago, in part based on something that [Richard MacManus wrote](https:/
> # Importing an OPML
> If you import an OPML file in your RSS reader, you are creating a static copy of the reading list. If the owner of the original list updates the list, this change will not be shown in your feed collection.
>
> # Subscribing to an OPML
> An OPML subscription, however, creates a live connection between the original source and your feed folder. Whenever a feed is added or deleted from the original list, the change will be reflected in your subscriptions. The notification system in Inoreader will notify you that new feeds were imported or existing feeds were removed.
Ideally, if a site had a blogroll or other mechanism by which they maintained and publicly published their own OPML list, then the user could plug that into the reader to subscribe to the list which could update dynamically. One could also subscribe to others' OPML lists (or subsets of them?) as well without needing to pay attention to them. In total, this sounds like what Ben's reader (and Known's subscription list) were doing, but by using a pre-existing standard that's broadly supported. (As an example WordPress sites with the Links module enabled publish their OPML files at example.com/wp-links-opml.php).