So, assuming I've built a site, how do I tell other people that I've written something? It turns out, talking with other people who are interested in the thing

So, assuming I've built a site, how do I tell other people that I've written something? It turns out, talking with other people who are interested in the things I write about is important in the initial stages of alerting people who may later choose to follow my website. Where do these people talk? Today, that's Twitter. (To a lesser extent, HN. Reddit has a community, but most of those communities frown on submitting your own content.) Creators stay on twitter because it is a free way to announce to interested parties that you have made A Thing. Any other service that has sufficient people will end up having the same problems we see on Twitter.