I've found that the default feed format is now
https://www.pcworld.com/feed, instead of
http://www.pcworld.com/index.rss, which is used in the current recipe.
One of the failed columns, Hassle-free PC (mentioned in
this article), doesn't land anywhere anymore, so... I don't know how to code it, but I guess the columnists feeds could be used instead, like this one who writes for Hassle-free PC:
https://www.pcworld.com/author/rbroida/feed