https://problogger.com/converting-rss-subscribers-to-blog-readers/
Converting RSS Subscribers to Blog Readers
Mar 21, 2006 - Phil Sim has an interesting post about The little post that could… where he had an influx of traffic to his blog f.
rss subscribersconvertingblog
https://darekkay.com/blog/rss-subscriber-count/
Estimating the number of your RSS subscribers
Analyze server access logs to view the subscriber count from popular RSS readers.
rss subscribersestimating