I upgraded WordPress last night because of a vulnerability, but in the process managed to break the feeds. So the widget and RSS were broken. While debugging the issue I stumbled on NetNewsWire’s View Source feature.
Control+Click on any feed and click “View Source.” I was expecting a rather dull plain text editor but this actually made it very easy to debug the feed:
This is a great way to see what’s going on under a broken feed.
Also, the problem with the feeds should be fixed. Sorry if you got duplicates of MacTips in your news reader.