I'm using the NewsFox RSS reader on Firefox, and it started showing me a column I can't decipher.
What is this Pr property of an RSS item? It seems to be called "Interest" in the column menu:
The NewsFox home page is no help; and its documentation is kaput.
"Interest" doesn't seem to be part of the RSS spec. Yet, NewsFox shows this for every feed.
So, what is Pr in this context?
