I've been slowly posting away at my newsletter, https://www.startupsfromthebottom.com/. Last month I posted all the ideas to the site to gain some semblance of seo. During that time someone on twitter posted about it and there was a big pop. It didn't completely die, having all the content on the site kept people around and started to drive some organic traffic.
I started to clean up a few issues on the site, ui/ux, responsiveness and added categories to each idea. Organic growth was still picking up. This past Friday I decided to put in more effort.
I posted on hacker news and the link got reposted on a few sites but the money post was in the hustle trends facebook group. Conversions from that group is nearly 45%. Subscriber base has grown over 24% since and today is looking better than yesterday. I'm not sure where it'll go but this increase in traffic is motivating to put more effort into it.