Eight out of ten people who see your headline will read it. Two out of ten will read what comes after. Write accordingly.

Eight out of ten people who encounter a headline will read it. Two out of ten will read what comes after. This is not a finding about blog posts or content marketing. It applies to email subject lines, LinkedIn headlines, resume summaries, presentation titles, and any piece of writing where the first line is visible before the rest.

The implication is uncomfortable. Most of what you write, most of the people who could have read it, never will. The only guarantee you have is the first line.

Why Labels Fail

Professional communicators have understood this for decades. Most professionals still treat headlines as labels. They write the content first, add a title at the end that summarises what they just wrote, and move on. “Marketing Tips for Beginners.” “Resume Advice.” “How to Use LinkedIn.” These titles are accurate. They make no promise worth investigating. They create no gap between what the reader knows and what they might know. There is no reason to click, open, or read on.

The headline also has to survive a Naver results page, which rewards different things from Google. InternetTrend gives Naver 62.9% of Korean web search in 2025; StatCounter has Google slightly ahead in 2026. A headline written for one engine is being judged by the other too.

What a Strong Headline Does

A strong headline does one of two things. It makes a specific, credible promise, such as “How to Cut Your Resume From Two Pages to One Without Losing Impact,” or it creates genuine curiosity based on something counterintuitive, such as “The Resume Section Most Hiring Managers Skip.” In either case, the reader finishes the headline with a reason to continue. Closing that gap requires engaging with what comes next.

The contrast between the two titles for the same content makes this concrete. “Email Etiquette in the Workplace” versus “The Email Habit That Makes You Look Junior to Every Senior Colleague.” The first is a category label. The second is a specific, slightly provocative claim that anyone who has ever worried about professional email will want to resolve. Same subject matter. Completely different pull.

Beyond Blog Posts: LinkedIn, Email, and Everything Else

A student’s LinkedIn headline is the first text a recruiter sees after their name. “Marketing Student at a Seoul university” locates them. “Content Strategist Building Brand Voice for B2B Technology Clients” positions them. The second version tells a reader what the person does and who they do it for. The first version simply describes a status.

Email subject lines follow the same logic. “Following Up” gets opened less than “Quick question about the Kakao application, two minutes.” The second version is specific, low pressure, and tells the reader exactly what they are agreeing to before they open it. In Korean professional communication, the concept of 첫 인상 (cheot insang) captures this precisely: the opening gesture that earns the next moment. Your headline is the cheot insang of every piece of professional writing you produce. Write it last, after you know exactly what case you are making. Then make it earn the read.

A Worked Example: Five First Lines in One Week

Here is how this plays out for one person. Park Jiyeon is 31 and runs B2B marketing for a software company in Pangyo. She wants to move to the Seoul office of a foreign firm, so in one week she has to write a LinkedIn headline, a resume summary, a cold email to a recruiter, the title slide for a quarterly review and a post for the company blog. Every one of her first drafts was a label. None of them was wrong. None of them gave anyone a reason to read the second line.

Look at what changed. None of the rewrites is louder than the original. Each one moves from naming a category to making a claim about the reader’s problem, or about a result the reader can check. The LinkedIn label says what her employer calls her; the rewrite says what she does and for whom. The slide title goes furthest, because the finding becomes the title, so a director who reads nothing else in the deck still leaves with the point. Jiyeon’s own worry was that the rewrites sounded pushy. That worry is common in Korea, where 겸손 (gyeomson, modesty) is part of how a good colleague is judged. But a specific claim is not a boast. A vague line is what makes a reader suspect there is nothing behind it. A precise line about a result you can back up reads as confidence.

If you are working on the resume version of this, Resume Radar shows how your summary reads to a screener. The same principle carries into the first sentence of a cover letter, which I took apart in Why Your Cover Letter’s First Sentence Is Killing Your Application, and into the opening line of an email, which is exactly where I Hope This Finds You Well goes wrong.

Why the First Line Carries More Weight on a Phone

Most of the reading your headline has to survive now happens on a small screen, in a feed, at speed. Usability research has pointed this way for a long time. Looking at how people actually use web pages, Jakob Nielsen estimated that on the average page users have time to read at most 28% of the words, and that 20% is more likely (Nielsen Norman Group, 2008). That was before most reading moved to phones. In Korea the shift since then has been from reading toward watching. The Korea Press Foundation’s 2025 Media Audience Survey of 6,000 adults found that short form news use rose from 11.1% to 22.9% in a year, while news use through internet portals fell to 66.5%, down from a peak of 79.2% in 2021 (한국기자협회, January 2026). In a short video, the caption and the first spoken line do the job a headline used to do. The format changed. The job did not.

The third check is the one people skip, and it matters most. Google’s guidance on helpful content asks two questions of every page: “Does the main heading or page title provide a descriptive, helpful summary of the content?” and “Does the main heading or page title avoid exaggerating or being shocking in nature?” (Google Search Central). Korean readers have a name for the failure: 낚시성 제목, the fishing headline that hooks a click and delivers nothing. A headline that overpromises wins one click and loses the next one. The pull you want comes from specificity, not from exaggeration. If you want to check that a title matches what people are actually looking for, the Search Intent Quadrant sorts the intent behind a query before you write the line.

Try It on Your Own First Lines

Pick the three first lines that get the most eyes in your working week. For most professionals in Seoul that is the LinkedIn headline, the subject line of the email you send most often, and the title slide of your next report. Write each one as a label, the way you normally would. Then rewrite it with the four checks above, and read both versions to a colleague who does not know what you are working on. Ask one question: which one would you open? If you are reworking your profile, my guide to what to write in a LinkedIn summary as a Korean professional picks up where the headline ends. And if the line you struggle with is the one you say out loud when someone asks what you do, the same filter applies to the elevator pitch.

→  The Writing Lab is where I work through specific writing challenges in depth. If you are working on your professional writing voice, the coaching section of the Work With Us page covers what that engagement looks like.

If you are working on your professional presence, the Brand Explorer can help you clarify what you are communicating and to whom.

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