10 Common SEO Mistakes That Kill Your Rankings

You've built a great product. Your website looks sharp. But Google won't give you the time of day.

Frustrating? Absolutely. Fixable? Usually, yes.

After working with hundreds of startups and SMBs, we've noticed the same patterns. The same mistakes. Over and over again. It's not that people don't care about SEO. It's that they're making errors they don't even realize are errors.

Let's fix that. Here are the 10 most common SEO mistakes we see killing rankings - and what to do instead.

1. Publishing Thin Content

Google's March 2024 Core Update went hard after thin content. Pages with little substance, recycled ideas, or AI-generated fluff got crushed.

Thin content is anything that fails to provide real value. A 300-word blog post that barely scratches the surface. A product page with two sentences of description. An FAQ page that doesn't actually answer questions.

Google's Helpful Content System now rewards content that demonstrates E-E-A-T: Experience, Expertise, Authoritativeness, and Trustworthiness. If your page doesn't show genuine knowledge or first-hand experience, it's getting pushed down.

Fix it: Audit your existing content. If a page is weak, either beef it up substantially or delete it. Consolidate overlapping articles into single, authoritative pieces. Make sure every page has a reason to exist.

2. Keyword Stuffing (Yes, People Still Do This)

It's 2025 and we still see websites cramming their target keywords into every sentence. Sometimes hidden in white text. Sometimes just awkwardly repeated.

"Looking for the best coffee shop in Melbourne? Our Melbourne coffee shop is the best coffee shop in Melbourne for coffee lovers who want coffee in Melbourne."

Google's algorithms got smart years ago. Natural language processing means they understand context, synonyms, and topical relevance. Keyword stuffing doesn't help you rank. It actively hurts you. Google's spam policies explicitly flag this as a violation.

Fix it: Write for humans. Use your target keyword naturally in the title, H1, and meta description. Then forget about it. Cover the topic thoroughly using related terms. If it sounds weird when you read it out loud, rewrite it.

3. Ignoring Technical SEO

You can write the best content on the internet. Doesn't matter if Google can't crawl it.

Technical SEO is the foundation. Problems here break everything else. Common issues we see:

• Robots.txt accidentally blocking important pages
• Missing or outdated XML sitemaps
• Broken internal links creating crawl dead-ends
• JavaScript rendering issues hiding content from search engines
• Missing canonical tags causing confusion

Most founders skip technical SEO because it feels boring. But one misconfigured robots.txt can tank your entire site's visibility.

Fix it: Run a crawl with Screaming Frog or check Google Search Console for indexing issues. Look for pages that should be indexed but aren't. Make sure your sitemap is current and submitted.

4. Building Bad Backlinks

This is the mistake that burns startups the hardest.

You need backlinks. You know you need backlinks. So you buy some from a sketchy service that promises 500 links for $50. Or you join a bunch of link exchanges. Or you pay for "guest posts" on sites that only exist to sell links.

Google's algorithms - specifically the Penguin update that's now part of core - are built to detect and devalue manipulative links. At best, those cheap links do nothing. At worst, they trigger a manual penalty that tanks your rankings.

The irony? Building spammy links is often more expensive than doing it right. You're paying for something that hurts you.

Fix it: Focus on quality over quantity. One link from a legitimate, relevant site beats 100 from link farms. Create content worth linking to. Do outreach the right way.

This is exactly why we built Revised. We source contextual backlinks from trusted domains - think Wikipedia, Reddit, Hacker News, industry publications. Real links with real editorial value. No PBNs. No spam. Just legitimate authority-building that actually moves the needle.

5. Ignoring Mobile Experience

Google uses mobile-first indexing. Full stop. The mobile version of your site is what gets indexed and ranked. Not the desktop version.

Yet we constantly see sites where:

• The mobile version has less content than desktop
• Buttons are too small to tap
• Text is unreadable without zooming
• Intrusive popups block the entire screen

If your mobile experience is bad, your rankings will reflect that. On both mobile and desktop searches.

Fix it: Test your site on actual mobile devices. Not just Chrome's device emulator. Use real phones. Click every button. Read every page. If anything is frustrating, fix it. Make sure all content is accessible on mobile.

6. Having a Slow Website

Site speed is a ranking factor. More importantly, it's a user experience factor. Slow sites have higher bounce rates. Higher bounce rates signal to Google that your page isn't helpful.

Core Web Vitals measure three things:

• LCP (Largest Contentful Paint): How fast your main content loads
• INP (Interaction to Next Paint): How quickly the page responds to interactions
• CLS (Cumulative Layout Shift): How much the layout jumps around during loading

That INP metric replaced FID in March 2024. Google now cares about responsiveness throughout the entire visit, not just the first click.

Fix it: Run your pages through PageSpeed Insights. Compress images and use modern formats like WebP. Minimize JavaScript. Leverage browser caching. Consider a CDN if you're serving global traffic.

7. Creating Duplicate Content

Duplicate content confuses search engines. When Google finds the same content on multiple URLs, it has to guess which one to rank. Often, all of them rank worse than a single consolidated page would.

Common causes:

• WWW and non-WWW versions of your site both accessible
• HTTP and HTTPS versions both live
• URL parameters creating infinite variations
• Pagination issues
• Scraped or syndicated content without proper attribution

Fix it: Pick your canonical URLs and stick to them. Use rel="canonical" tags to point duplicate pages to the original. Set up 301 redirects from alternate versions. If you syndicate content, ensure publishers link back to your original.

8. Poor Internal Linking

Internal links do two things. They help users navigate your site. And they help Google understand your site's structure and hierarchy.

Bad internal linking looks like:

• Orphan pages with no links pointing to them
• Generic anchor text like "click here" or "read more"
• Important pages buried 5+ clicks deep
• No logical topical clusters

Good internal linking spreads authority from your strongest pages to the pages you want to rank. It tells Google which pages matter most.

Fix it: Link from high-authority pages (homepage, popular posts) to your priority pages. Use descriptive anchor text that tells readers and search engines what to expect. Create topic clusters where related content links together. Make sure every important page is reachable within 3 clicks.

9. Ignoring Search Intent

You can rank #1 for a keyword and still get zero benefit if you're not matching user intent.

Search intent comes in four flavors:

• Informational: Learning something ("what is domain authority")
• Navigational: Finding a specific site ("reddit homepage")
• Commercial: Researching before buying ("best SEO tools 2025")
• Transactional: Ready to buy ("buy ahrefs subscription")

If someone searches "how to fix a leaky faucet" and you show them a product page for faucets, you've failed. Even if you technically rank.

Fix it: Before creating content for a keyword, Google it. Look at what's currently ranking. That tells you what Google thinks the intent is. Match it. If the top 10 results are all how-to guides, write a how-to guide. If they're product comparisons, write a comparison.

10. Not Tracking Results

You can't improve what you don't measure. Yet many companies treat SEO as set-it-and-forget-it. They publish content, build some links, then wonder why nothing's happening.

Without tracking, you don't know:

• Which pages are gaining or losing rankings
• What keywords are actually driving traffic
• Which content converts
• Where your technical issues are

Flying blind means you keep making the same mistakes without realizing it.

Fix it: Set up Google Search Console (it's free). Connect Google Analytics or a similar tool. Track your target keywords weekly. Review performance monthly at minimum. When something drops, investigate. When something works, double down.

Putting It All Together

SEO isn't magic. It's attention to detail across dozens of factors. The sites that win are the ones that avoid these mistakes while their competitors keep making them.

Quick recap:

1. Don't publish thin content - provide real value
2. Stop keyword stuffing - write naturally
3. Fix your technical foundation - it enables everything else
4. Build quality backlinks - not garbage links
5. Prioritize mobile - it's what Google indexes
6. Speed up your site - slow is death
7. Eliminate duplicate content - consolidate
8. Internal link strategically - distribute authority
9. Match search intent - give people what they want
10. Track everything - data drives decisions

Most of these fixes aren't hard. They just require discipline. Start with a technical audit. Review your content quality. Check your backlink profile.

If building quality backlinks feels overwhelming, we can help. Revised automates contextual link acquisition from trusted sources, so you can focus on building your product while your domain authority grows.

Ready to stop making these mistakes? Get started with Revised and see how legitimate backlinks can move your rankings.