If you don’t want to disappear from search engine listing following are SEO mistakes which should be avoided:

Having Site Entirely made of Graphics:
Don’t make your links in Java Script or graphics. Don’t be over creative while making your links. If links are made in graphics search engines don’t recognize. Your links should be in a text format.

Having Text in Flash:
Flash should be used in a creative manner as many visitors still don’t like moving flash images.
The text which is written on flash search engine can’t recognize. Have all your text in a plain text format.

Having Invisible text:
For high ranking in search engines people used for many years invisible text. But now search engines are cleverer than before and these tactics can help search engines to ban their site. Don’t use invisible texts in your website. This will put you in bad books of search engine.

Using doorway or Gateway Pages:
Doorway or gateways pages are those web pages which are especially designed for search engines. These pages are full of keywords but they don’t target the user. The content of these pages are not relevant so that they attract search engine crawlers. Make website for your users not for search engines. If your content is relevant your site will attain a high rank.

Having no keyword In Title Tag:
Title tag is the sentence or words that your user sees on the top bar of the web browser. It is important to use Title tag. If keywords are there in the title tag it will help search engines to know about your keywords. Using no keywords in the title tag is a big mistake. It is like killing an opportunity to get into the top list of search engines.

Being too Inconsistent and Ambiguous:
Make a site that talks about your business. Don’t make an irrelevant site which doesn’t profit you in business. Focus on choosing your keywords and target audience. Use every word of your website as a marketing tool for your business.

Not Using word Tracker:
Keyword search should be the first step while designing the content of the  website. Word tracker is your guide to choose right keyword for your website. If you ignore right keywords then you can’t reach the potential visitors.

Bad Link Exchange:
While exchanging links be particular. It’s difficult to control other websites to link your site but you can certainly restrict yourself to link with banned and absurd sites. Be specific about your link partner. Don’t add your site just for reciprocal links.

Having numerous frames in website:
The use of frames in making a website  is outdated now. If you have not started website designing than make sure you don’t use frames in your website. Search engines find it difficult to index framed websites.

Ignoring SEO Algorithm:
In today’s competitive  business industry, every site wants to be featured in the top ten list of the search engine. The biggest mistake you can commit in website is ignoring the SEO Algorithm. Your site must be constantly updated and should implement changes according to search engines.