@colinwalker I have had some personal blogs in my RSS reader for what seems like almost two decades, and I have blogged for over 15 years. The blog had more traffic in the eearly day but the level of engagement and traffic went down around 2011-2012 as readers moved their interests to Twitter and Facebook. When I started using Webmentions and Semantic Linkbacks a few years ago, I was able to pull back in some of that engagement from Facebook. When Facebook removed API support for the personal timeline, the participation dropped off again.
I think discovery is the main issue.