Social Copy

Copy-pasting across platforms is why your reach is dying

Yemi manages social for a B2B software brand. She writes what she thinks is a great post — a thoughtful insight about remote work productivity — and publishes it identically on LinkedIn, Instagram, X (Twitter), and Facebook.

LinkedIn: 12,000 impressions, 340 likes, 62 comments, 4 inbound DMs. Instagram: 87 likes. 3 comments. No DMs. X: 4 retweets. 11 likes. Facebook: 22 likes. 0 comments.

Same words. Four completely different results.

(Illustrative scenario based on patterns commonly observed in multi-platform social media publishing. Specific engagement figures are representative — not a verified account of a specific named brand.)

The issue isn't the quality of the content. It's that each platform has its own culture, its own format conventions, its own algorithm, and its own audience expectations. Content that thrives on LinkedIn sounds pompous on Instagram. Content that works on TikTok sounds chaotic on LinkedIn. Content that gets engagement on X is too short to make sense as a Facebook post.

Social copy is not one skill. It's four (or five) skills that share some DNA.

What's the same across all platforms

Before going platform-specific, the universal rules:

1. The first line is the hook — on every platform, most people see only the first line before deciding to stop or scroll. Write the first line as if it's the only line.
2. Short beats long — even on long-form platforms like LinkedIn, shorter posts consistently outperform longer ones.
3. Specificity beats vagueness — "I made $12,000 in my first month freelancing" outperforms "freelancing can be very lucrative."
4. One idea per post — posts that try to make three points make zero.
5. End with something — a question, a CTA, a provocative final line. Don't just stop.

LinkedIn: the professional network with a storytelling culture

LinkedIn is unique: it's the only major platform where professional content is expected — and where vulnerability, lessons, and "here's what I learned" posts consistently outperform promotional content.

What works on LinkedIn:

• Personal stories with professional lessons — "I got rejected by 17 companies before landing my first marketing job. Here's what changed on attempt 18."
• Counterintuitive takes — "The best thing I did for my career was turn down a promotion."
• Practical frameworks — "The 3-question framework I use before every client call."
• Data + insight — "We looked at 500 cold emails. The ones with this one thing in common had 4× the response rate."

LinkedIn post structure:

Line 1: Hook — provocative statement, surprising stat, or story opener
[blank line]
Line 2-5: Build the tension or context (keep it short)
[blank line]
Line 6-10: The insight or lesson
[blank line]
Final line: CTA, question, or provocative ending

The blank lines are intentional — LinkedIn shows the first 2–3 lines before "...see more." Blank lines make the post look scannable before the reader commits.

Length: 150–400 words is the sweet spot. Short enough to read; long enough to deliver substance.

Hashtags: 3–5 relevant ones at the end. LinkedIn's algorithm uses them for reach; more than 5 can look spammy.

Using AI for LinkedIn: Prompt: "Write a LinkedIn post about [topic/lesson/experience]. Start with a counterintuitive opening line. Use the hook-tension-insight structure. Write in first person, conversational tone. Include a question at the end to encourage comments. Under 250 words."

Instagram: visual-first, caption-second

On Instagram, the image or video stops the scroll. The caption deepens the relationship. The mistake: writing the caption as if it's the primary content.

Caption formats that work:

The micro-story:

The list post:

The quote / opinion:

Instagram caption rules:

• First line is everything — Instagram truncates at ~125 characters before "more." Win here or lose the caption read.
• Emoji as punctuation — used strategically, not gratuitously. One or two to replace bullet points or add energy, not 15 in a row.
• Hashtags: 5–10 relevant ones, either at the bottom of the caption or in the first comment.
• CTA: Ask a question (boosts comments), direct to bio link, or ask them to save the post.

X (Twitter): compression is the skill

X rewards the ability to say something worth saying in the fewest possible words. Long threads work when each individual tweet is strong. Single tweets work when they're worth sharing.

What works on X:

• Hot takes: "The best marketing book ever written isn't a marketing book." (Forces a reply.)
• Ultra-specific insights: "We found that emails sent on Tuesday between 7–9am had 23% higher open rates than Monday same time. The reason is counterintuitive." (Makes you want to know the reason.)
• The single question: "What's one piece of marketing advice you wish you'd got 5 years earlier?" (Invitation, not broadcast.)
• The thread starter: "10 things I learned managing $1M in ad spend. A thread 🧵"

X copy rules:

• 280 characters is the limit, but the sweet spot for a standalone tweet is under 200
• Threading: if you have more to say, thread it — but each tweet must stand alone and pull to the next
• No hashtags for organic content — X's algorithm no longer amplifies hashtags meaningfully; they look dated
• Engagement bait works: "Retweet if you agree" and "Quote tweet with your answer" genuinely increase reach

TikTok/Reels: the script IS the ad

On short-form video, you don't write a caption — you write a script. The spoken word and the visual are the copy.

The 3-second hook rule: In the first 3 seconds, the viewer decides whether to keep watching or swipe. The hook must be visual (something happening, something surprising) AND spoken (an opening line that creates urgency).

Opening line formulas for video:

• "I can't believe this actually worked..."
• "The reason you're not getting clients is not what you think."
• "Nobody talks about this, but..."
• "Watch until the end — this changed everything for me."

Script structure:

1. Hook (first 3 seconds): "I used to spend 4 hours a day on social media content."
2. Problem: "Then I realised I was spending time on the wrong things."
3. Solution/Insight: "I cut it to 45 minutes. Here's exactly how."
4. Proof/example: Show the result, the before/after, the steps.
5. CTA: "Follow for part 2" / "Link in bio" / "Tell me in the comments."

Using AI for video scripts: Prompt: "Write a 60-second TikTok/Reels script about [topic]. Hook: first line must stop someone mid-scroll (provocative or surprising). Structure: hook → problem → solution → result → CTA. Write it as spoken dialogue, not formal copy. Include stage directions for visuals where helpful."

The repurposing engine: one idea, many formats

The highest-leverage habit in content marketing: write once, reformat many times.

One 1,500-word blog post can become:

Using AI for repurposing: Write your core content once. Then prompt Claude: "I have this blog post: [paste]. Reformat it for: (1) a LinkedIn post under 250 words leading with the most counterintuitive insight, (2) a 5-tweet X thread with each tweet standing alone, (3) an Instagram caption under 150 words with a question at the end, (4) an email newsletter intro under 100 words with a CTA to read the full post."

Four formats in under 5 minutes. You still review and edit — but the reformatting work is done.

Back to Yemi

Yemi didn't rewrite her strategy — she rewrote her packaging. The remote work insight she'd been copy-pasting everywhere was genuinely good; it just wasn't being expressed in a way that fit each platform's culture. Once she wrote a personal story version for LinkedIn (hook, tension, lesson, question), a tight list format for Instagram, and a single punchy take for X, the engagement gap closed dramatically. LinkedIn kept its strong performance. Instagram and X started converting too — not because the idea changed, but because the format matched what each platform rewards. The content wasn't the problem. The copy was.

Key takeaways

• Each platform has its own culture. Copy-pasting across platforms is the single fastest way to underperform on all of them.
• The first line is universal law. On every platform, the first line determines whether anyone reads the rest.
• LinkedIn rewards stories and lessons. Instagram rewards visuals and lists. X rewards compression and takes. TikTok rewards scripts and hooks.
• Repurposing is the highest-leverage content habit. One core idea, reformatted for four platforms, creates a week of content.
• AI makes repurposing fast — give it your core content and ask for platform-specific rewrites. Review and edit; don't publish raw.