Comments are the expensive engagement: someone stopped scrolling, typed, and posted. Ranking systems weigh them above likes because they cost effort, and human readers treat a busy comment section as the strongest proof that a post is alive.
Feeds price signals by effort. A view costs nothing. A like costs a tap. A comment costs real thought, so it predicts interest better than anything cheaper.
Reply chains multiply the effect. When people answer each other, the post keeps generating fresh activity, and feeds keep circulating it long after the first wave. Creators build for this on purpose: questions, prompts, opinions with room to disagree.
Everyone has learned what real attention sounds like. A video with 500,000 views and four comments reads as bought or botted, even when it isn't.
Brands doing homework read comment sections before signing deals: they look for real sentences, on-topic replies, and the creator answering. Emoji walls and "nice pic" chains read as exactly what they are.
Purchased comments are written replies delivered to the post you choose, on Instagram, TikTok and YouTube. They cost more than likes and arrive slower, because each one is composed.
The honest limits: volume is lower by nature, and generic comments fit general content best. On a niche post, seed the section with your own question first, so delivered replies have something natural to answer. Comments dress a post; they don't argue it into reach by themselves.
Yes, on every major platform. Comments cost more effort, so ranking systems trust them more. Reply chains help even more than single comments.
Early on, yes. Replies in the first hour multiply activity while the post is being tested, and they train your audience that commenting gets a response.
Because real attention talks. People expect the numbers to move together, and views without any conversation break that pattern. Proportion is the whole game; see social proof.
Related terms
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