Publish On (your own) Site, Syndicate Elsewhere is an [[IndieWeb]] practice of posting content on your own site first then posting copies or sharing links onto other sites. This would put more value in your own hosted instance and control the authoritative URL for your content. Another aspect is content discovery. https://www.theverge.com/2023/10/23/23928550/posse-posting-activitypub-standard-twitter-tumblr-mastodon https://indieweb.org/POSSE