Some common SEO mistakes include repeating keywords excessively in titles, overusing keywords throughout pages, and lacking essential technical elements like a sitemap, unique metadata, and alt text for images. Specifically, the document outlines mistakes like repeating the same keyword in titles, having too high of a frequency for keywords, missing a sitemap, lacking keywords in URLs, overusing H1 tags on a single page, and not having unique metadata for each page. The key advice is to include important keywords but not overdo it, and implement standard technical elements to help search engines properly index content.

1. Top 10 common mistakes of SEO
Here are some common mistakes of SEO and if you are having a blog or website then you should
check out this SEO tips, plugins working, how to use…
1. Repeating the same keyword in the title:You already know using targeted keyword in page
title is good for SEO and there are thousands of SEO tips to describe the advantages of using
your targeted keywords in page title. But do you know that repeating the same word or key
phrase twice or more is inappropriate and spammy. The title should be legible and unique.
2. The high frequency of keywords: Keywords are important, but do not think that “bigger is
better”. Do not overdo it.
3. The absence of a site map: A sitemap is an eye of search engine spiders to see your deep
links. Your site pages will get indexed in less time if you are having a sitemap for your website.
4. Lack of keywords in URL: A page URL without the targeted keyword is completely useless.
It should contain the shortest and accurate description of the page.
5. The use of h1 tags on the same page several times: One page must contain only one H1 tag.
Using H1 tag several times will hurt your site ranking.
6. Lack of unique metadata for each page: Meta tags should be different for each individual
page of your website.
7. Using the same text for all the inbound links: Do link building carefully. Try to make it
natural by hyperlinking your site name or domain sometimes.
8. Using heavy java scripts & flash: This will slow down your page loading speed.
9. No image alt tag: Search engine spiders can’t read an image file. But they can read alt tags.
So always use an alt tag for an image. But don’t overdo it by spamming your keywords.
10. Excessive Ads: Placing excessive ads in your site will surely harm your SEO.