1. Wrong Keywords are targeted – this is the most common mistake in Search Engine Optimization, even most experienced Search Engine Optimization experts make it. Most of the keywords chosen by the people for their websites are descriptive for their website, but they are too far from average users mind. For example for a relationship website the keyword ‘relationship guide’ won’t work even tough it contains the keyword ‘relationship.’ On the other hand ‘dating advice’ will work easily. 2. Flash website without html as alternate – one thing you should remember is that flash websites are attractive but not to search engines. If you want your Flash based website to be loved by the search engines then provide an html versions. The reason why search engine don’t like Flash sites is because spider can’t read Flash content and therefore can’t index it. 3. Using Java Script Menus – search engine do not read JavaScript, so build your website accordingly. You should go for sitemap i.e. putting your links in a noscript tag. Once doing so all your links will be crawable. 4. Ignoring URLs – URL plays an important role in your websites promotion. It is possible to have high rank even without keywords in the URL. But if you have keywords in the URL, (file name, domain name as part of the URL) gives you an additional advantage. For MSN and Yahoo keywords in URL are more important. Even for Google weight of URLs with keywords is more than that of the URLs without keywords. 5. Choose backlinks wisely – one of the most common fallacies is that more backlinks are always better. Because of this many web masters go for links with forum, newsgroup, link farm etc. ultimately leading the site to be banned. What you really need is quality backlinks. 6. Title Tags are ignored – very often people leave < title > tag empty. Instead leaving it empty this is one of the best place to have a keyword, because it not only help you out in optimization but also the text in the < title > tag shows in the search results as your page title. 7. Consistency and maintenance – in the last but not least, most important to get rank in search engine is daily updates. To be successful optimize your site permanently and keep an eye on competition. 8. Meta-tags are past – it is a common myth that Search Engine Optimization is all about getting your Meta keywords and description correct. Meta tags are long gone now they are past and don’t except your website will be ranked well because of adding Meta keywords and description. 9. Less keyword in content – put keywords wherever it makes sense and focuses more on keywords. It will be better to highlight them or make them bold. 10. Images for Headlines – an image in the headline can make your website look unique, but not in terms Search Engine Optimization. For search engines images in menus and headline are big mistakes because menu links and h2, h2 tags are important for SEO. If you are not sure how your h1, h2 tag will look like or you are afraid of that it will look horrible, try improving or modifying them in stylesheet instead of going for an image.
yes right !!!! People often make and define the wrong keywords that are not at all searched. So proper keyword analysis should be done. Wrong keywords take you no where. Your Search Engine Optimization Company becomes successful only on choosing the right keywords.
11. Copy and pasting from other sites without crediting them http://seomavenchat.com/seo-tips/search-engine-optimization-10-mistakes-you-shoud-know/
The 10 points are great. Yes I am agree with point 5. Choosing good backlinks is necessary. Press release sites offer good PR backlinks.