Short answer: yes, conversations are a ranking signal on most networks, and the data shows posts where creators reply do better. Nobody can promise a fixed boost, but answering comments is one of the few things that both helps reach and wins customers.
What the platforms say
- Instagram: ranking uses how quickly people like, comment, share and save a post, and whether you comment on each other's posts (Instagram).
- Facebook: the average length of comments on a post and how relevant they are to its topic are both listed signals (Meta).
- Threads: the feed predicts how likely you are to reply, and counts replies to replies too (Meta).
- TikTok: recommendations use your interactions, including the comments you post (TikTok).
- X: the For You timeline learns from your likes, reposts and replies (X).
What the data shows
Buffer compared around 2 million posts, each account against itself. Posts where the creator replied to comments had higher engagement: +42% on Threads, +30% on LinkedIn, +21% on Instagram and +9% on Facebook (Buffer, 2025, vendor data). It's a correlation: posts that are already doing well attract more replies. Even so, it points one way.
Why speed matters more than the algorithm
- About three-quarters of people expect a brand to reply on social within 24 hours, and 73% say they'll buy from a competitor if a brand doesn't respond (Sprout Social Index 2025, vendor data).
- In a classic study of 1.25 million leads, companies that replied within an hour were nearly 7 times as likely to reach a real conversation as those that replied an hour later (HBR, 2011).
A comment asking a price is a customer halfway through the door. The reach is a bonus.
A reply routine that works
- Answer buying questions first: price, availability, delivery, bookings.
- Reply in public with a short, useful answer, then move details to DMs.
- Ask a question back when it fits. It keeps the thread going.
- Don't paste the same reply under every comment. LinkedIn counts repetitive comments as spam, and people notice.
- Clear the queue at set times: morning, lunch and late afternoon.
Where AeroReply fits
AeroReply brings comments and DMs from Instagram, Facebook, Bluesky and Google reviews into one inbox, and drafts each reply from your own business facts. You approve it, or let it send on its own once you trust it. See AI reply drafts, or try the free AI reply generator.
Frequently asked questions
How fast should I reply to comments?
Within 24 hours at most. About three-quarters of consumers expect that (Sprout Social Index 2025). For buying questions, within the hour.
Should I reply to every comment?
Reply to every question and every complaint. For simple compliments, a like or a short thanks is enough. Vary your words; identical replies look automated.
AI content, scheduling, engagement and a full marketing suite — free to start.
Start free
