17 SEO myths checked against Google's own documentation, from keyword density to llms.txt, with what to do instead to rank on Google and get cited by AI.

In short
most SEO myths come from tactics that worked fifteen years ago or from misread correlations. Google's own documentation states that it ignores the meta keywords tag, that content length alone does not matter, that there is no duplicate content penalty and that no special file or markup is needed to appear in AI Overviews. What still works: useful pages that answer a real search intent, a site Google can crawl, and mentions and links earned on other sites.
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SEO myths cost time and money: teams count keywords, pad articles to 3,000 words or buy hundreds of links because a forum said so. The fastest way to sort fact from folklore is to read what search engines publish themselves. Google lists several of these beliefs in the section on what not to focus on of its SEO Starter Guide. This guide reviews 17 common myths, groups them by theme and gives, for each one, the reality and what to do instead. If you are new to the field, start with our SEO basics first.
Three mechanisms keep old beliefs alive. First, outdated advice keeps circulating: keyword density or exact-match domains carried real weight in the 2000s, and articles from that era still rank and get copied. Second, correlation is mistaken for cause: pages that rank well are often long, so people conclude that length makes them rank, when depth and usefulness are the real drivers. Third, Google rarely gives exact figures, which leaves room for sellers of shortcuts.
The rule that follows is simple: before changing a site because of a claim, look for a primary source (Google Search Central, Bing Webmaster Guidelines, the documentation of OpenAI or Anthropic) or test it on your own pages. The list of real Google ranking factors is shorter and more boring than most myths suggest.
Google states plainly that Google Search does not use the keywords meta tag. Filling the meta keywords field is wasted effort, and it shows your target terms to competitors. Spend that time on the title tag and the meta description, which shape how your result looks.
No percentage is recommended anywhere in Google's documentation. Repeating a term again and again is keyword stuffing, which Google lists in its spam policies. Write naturally, use the main term in the title, the H1 and the first paragraph, then cover related questions. If you want to check that a draft is not over-optimized, a keyword density calculator is useful as a ceiling, never as a target.
Latent semantic indexing is a 1980s information retrieval technique, and Google has said it does not use it. What helps is covering the subtopics, entities and questions a reader expects. Our entry on LSI keywords explains where the term comes from and what to do instead.
Google writes that the length of the content alone does not matter for ranking. A 600-word answer can beat a 4,000-word guide if it solves the query faster. Length should follow the intent: a definition needs a few paragraphs, a comparison needs a table and criteria. Our guide on how long an article should be gives ranges by type of query.
According to Google, keywords in the domain name or URL path alone have hardly any effect on ranking. A short, memorable brand name is a better long-term asset, especially now that AI assistants recommend brands by name.
In February 2023, Google published its guidance on AI-generated content: it rewards helpful, high-quality content however it is produced, and appropriate use of automation is not against its guidelines. What is penalized is mass-produced content with no value, whatever the tool. We cover the details in AI content for SEO.
Google's starter guide says that content accessible under several URLs is fine and will not cause a manual action; it is only inefficient. Google picks one version to show. Handle duplicate content with canonical tags and redirects to keep signals consolidated, without panic.
Links remain a strong signal, but quantity is a poor proxy. A few links from relevant, trusted sites outweigh hundreds of links from directories or link farms, and buying links that pass ranking credit breaks Google's spam policies. Focus on the number of relevant referring domains, from sites that make sense for your audience.
Asked whether E-E-A-T is a ranking factor, Google's starter guide answers: no, it is not. It is a framework used by quality raters to evaluate results, and Google's systems look for signals that align with it. You cannot add E-E-A-T with a plugin; you show it through named authors, sources and first-hand experience.
Google representatives have said for years that likes and shares are not direct ranking signals, and that Google Analytics data is not used for ranking. Social signals help indirectly (people discover a page, then link to it or search for the brand). A high bounce rate can be perfectly normal on a page that answers the question in one screen.
Google finds most pages by following links. Submitting an XML sitemap in Search Console speeds up discovery on new or large sites, but no paid submission exists and none is needed. If pages are missing, check crawlability and internal links first, then the page indexing report in Search Console.
Page experience matters, but Google describes it as one signal among many: a slower page with the best answer can outrank a faster page with a weaker one. Fix severe problems first (pages that take several seconds or shift while loading), then return to content.
Competitors publish, Google updates its systems several times a year and content ages. Sites that keep publishing and refreshing hold their positions; sites that stop slowly lose them. SEO works like a channel you run, with a monthly rhythm.
On a new or weak site, expect the first visible effects in about 2 to 4 months, longer on competitive topics. Publishing regularly, fixing technical blockers and earning a few relevant links are what shorten that delay.
AI assistants rely heavily on web search to answer: ChatGPT search, Gemini and AI Overviews retrieve pages and cite sources. Being well ranked and clearly written increases the chance of being cited. We address the question in Is SEO dead?
Generative engine optimization has produced its own folklore in two years. Two myths are worth correcting with primary sources.
Google's documentation on AI features and your website states that there are no additional requirements to appear in AI Overviews or AI Mode, that you do not need new machine-readable files or AI text files, and that no special schema.org structured data is required. An llms.txt file can help some agents read your site, but it guarantees no citation.
OpenAI documents separate crawlers in its bots documentation: GPTBot collects content that may be used to train models, while OAI-SearchBot is used to surface sites in ChatGPT search. You can block training and stay visible in search, as long as OAI-SearchBot is allowed in your robots.txt. Our guide to robots.txt for AI crawlers gives the exact rules.
| Myth | Reality | Source |
|---|---|---|
| Meta keywords help ranking | Ignored by Google Search | Google SEO Starter Guide |
| Ideal keyword density | No target; stuffing is spam | Google spam policies |
| LSI keywords | Not used; cover subtopics instead | Google public statements |
| Longer is better | Length alone does not matter | Google SEO Starter Guide |
| Keyword in domain | Hardly any effect | Google SEO Starter Guide |
| AI content is penalized | Quality counts, not the tool | Google Search Central blog, February 2023 |
| Duplicate content penalty | No manual action, only inefficiency | Google SEO Starter Guide |
| E-E-A-T is a ranking factor | No, a quality framework | Google SEO Starter Guide |
| Special file needed for AI Overviews | No extra requirement | Google AI features documentation |
| GPTBot controls ChatGPT search | OAI-SearchBot does | OpenAI bots documentation |
Debunking myths frees time for what works: publishing useful pages regularly, linking them internally and earning mentions. This is what Sorank automates: it finds the keywords, writes and publishes optimized articles with the blog article generator, and obtains natural backlinks automatically from its network of 5,000+ users. The best answer to SEO myths is a steady publishing rhythm based on primary sources. See Sorank plans, with a 3-day free trial.
No. Google does not recommend any keyword density and lists keyword stuffing among its spam policies. Use the main term where it is natural (title, H1, introduction) and spend the rest of the effort covering the questions readers ask.
No. Since February 2023, Google's guidance says it rewards helpful, high-quality content however it is produced. Low-value content produced at scale is penalized under spam policies, whether it is written by people or by AI.
Start with Google Search Central documentation and the Search Central blog, then Bing Webmaster Guidelines and the documentation of AI providers such as OpenAI. If no primary source exists, test the tip on a small group of pages and compare results in Search Console before rolling it out.
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