The RSS feed for the Jenkins Community Blog hasn't been working for a while.
The URL used in https://www.jenkins.io/node/ is https://feeds.feedburner.com/ContinuousBlog/. That feed does seem to include the recent articles published on the blog. But taking the first article at the moment:
"Four students and their master project in Jenkins security"
The link for that article in the RSS feed is:
and going to that link shows me another FeedBurner page with "entertainment zone" at the top.
This has been the case for a while - going to any Jenkins article from my news reader just gives me the "entertainment zone" page.