The following is a list of the top 5 SEO mistakes made.
1. Bad content. It has been said that content is king. People will not back link your site if they see no value.
2. Not using WordPress is a close second. Since WordPress is optimized for SEO it seems foolish not to use it.
3. The third problem is the tags are unrelated to your post. (Tags should include good related keywords to the title of your post and should be included so they flow naturally.) Otherwise ranking appears to suffer.
4. Fourth problem no back links. You have to have back links to rank higher with Google. Use blogs and other sites to leave posts and/or articles with links back to your site.
5. Fifth problem is bad (low traffic) keywords. You need to keep your focus on keywords when doing any site development. The right keywords (keywords that you can compete for) can make all the difference in the amount of traffic to your site.
The Learn Internet Marketing Tools website has some addition information you might find useful.

tool and it’s free and easy to use. It is also optimized for SEO (search engine optimization) and has many valuable plugins that can help make life even easier. There are also many freely available themes to download and many of these have easy to modify features and widgets.