AdSense ads.txt in WordPress: How to Check Yours Is Correct (I Tested Mine)
AdSense ads.txt in WordPress: the seven checks I ran on my own file, what Google status labels mean, and how to fix problems.
ix 404 errors in WordPress
How to Fix 404 Errors in WordPress: What My Own Log Showed About Old Tag Pages
How to fix 404 errors in WordPress, based on my own 404 log: old tag pages, bot probes, and when to use a 301 or a 410.