Here's the scary thing about SEO mistakes.
They're silent killers.
You don't get an error message. You don't get a notification. You just... slowly... stop appearing in search results.
And by the time you notice, you've lost months of potential traffic and revenue.
After 500+ campaigns and 20+ years, here are the 11 mistakes we see over and over again.
The mistakes
1. No XML sitemap submitted
It takes 5 minutes. It tells Google exactly which pages to crawl. And yet, shocking numbers of businesses haven't done it.
2. Duplicate title tags
When every page has the same title tag -- or no title tag at all -- Google has no idea what each page is about. You're making its job impossible.
3. Ignoring page speed
Your site takes 8 seconds to load and you're wondering why people leave? They're not patient. Google isn't either.
4. No mobile optimization
More than 60% of searches happen on mobile. If your site looks terrible on a phone, you're losing the majority of your potential traffic.
5. Keyword cannibalization
Three different pages targeting the same keyword? They're competing with each other. Google doesn't know which one to rank. So it ranks none of them well.
6. Ignoring internal linking
Your best content should be easy to find from anywhere on your site. If it's orphaned -- no internal links pointing to it -- Google might never find it either.
7. Publishing thin content
200-word blog posts with no depth, no data, and no originality. These don't rank. They just dilute your site quality.
8. Never updating old content
That blog post from 2019 with outdated statistics? It's hurting you. Refresh it or remove it.
9. Missing alt text on images
Google can't see images. Alt text tells it what they are. Missing alt text = missed ranking opportunities.
10. Broken links everywhere
404 errors frustrate users and waste crawl budget. Check for them monthly. Fix them immediately.
11. No SEO system at all
This is the meta-mistake. All the mistakes above happen because there's no system tracking them.
No checklist. No status tracking. No accountability.
Fix all 11 (and 102 more)
SEO Checkup covers all of these mistakes -- and 102 more potential issues -- as trackable, prioritized tasks.
Each one has a step-by-step tutorial. Each one has status tracking.
Free. No credit card. 30 seconds.
Stop making silent mistakes. Start fixing them systematically. Google's own SEO starter guide is the best place to learn what not to mess up.