John Builds

John Builds

Founder of XreplyAI: buildinpublic

About

Love side projects. Claude Code enthusiast. BuildInPublic

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Tastemaker
Tastemaker
Gone streaking
Gone streaking

Maker History

  • XreplyAI
    XreplyAIStay visible on social without living on it
    Feb 2026
  • 🎉
    Joined Product HuntJanuary 15th, 2026

Forums

John Builds

2h ago

Why does AI-generated engagement feel hollow — and is voice training the answer?

Something I've been thinking about since building in this space: the engagement problem with AI content isn't volume, it's recognition.

When someone replies to your post and it reads like "Great insight! Really resonates with me," you know immediately it wasn't them. Not because AI wrote it but because it sounds like no one in particular wrote it.

John Builds

2d ago

Does replying to tweets actually boost your reach? The X algorithm mechanics explained

Something I see debated constantly in founder communities: does the "reply to grow" advice actually work, or is it just cargo-culted wisdom?

Turns out there's a real mechanism behind it and it's more interesting than "engagement = good."

John Builds

6d ago

The hidden rules of LinkedIn formatting (and why they matter for reach)

Something I've been curious about: how many of you have noticed your LinkedIn posts performing differently based purely on how they're formatted not the content itself?

I've been digging into this while building a social scheduling tool, and the formatting layer on LinkedIn turns out to have a much bigger effect on reach than I expected.

A few things that surprised me:

Posts with external links in the body consistently underperform the same post with the link moved to the first comment. The algorithm appears to treat outbound links as an exit signal. Line breaks that look correct in the editor often collapse on mobile not a display glitch, just how LinkedIn renders them on different clients. The "see more" cutoff is shorter on mobile (~210 chars) than desktop, so hooks that work on one don't always land on the other.

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