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EchoThread adds threaded comments to any blog, docs site, or page with one script tag (~37 KB, zero deps). The catch most comment tools miss in 2026: spam is now AI-generated and fluent. EchoThread ships a first-party ML filter (Siftfy) that scores every comment the instant it lands — so you can even let readers comment without an account and keep threads clean. No ads, no tracking, no server to run. Threaded replies, reactions, image + link previews, spoilers, a real moderation dashboard, and one-step import from Disqus/WordPress. Free for your first site, forever. Pro is $19/mo — about a fifth of Disqus Pro.