Top 5 ways to make a SEO friendly website

1] Clean code: Clean code is king. But how to keep your website designing code clean?
Use css instead of html. Nested html tables used to design a websites layout increases the websites markup code.
Nested html tables also reduce the speed of the search engine bots to scan your website.
With the use of css the web designer can completely differentiate between content (HTML) and design (CSS)
Dont use inline css to design your website.Instead use div based layout with css to design your website.
A div based css layout highly reduces markup code as the website structure is built using the mighty div tag and the styles reside in an external css file. This leads to more space for your content and links which is very important for a search engine friendly website.
Use of css div reduces your pages weight which increases page download time.

2] Relevant content: Relevant content means content useful to your target audience. While writing about your target audience keep two things in mind. First, the services you are offering and secondly, the need of the target audience.Now write the features and advantages of your products and services and how your product/service is going to help your target audience.

3] Properly organized and structured layout: This point includes human psychology, artistic sense of the designer and a bit of science. A properly organized and structured website layout must satisfy the following criteria:
Simplicity: A simple and clean web design is always a pleasure for the user. It makes an impact. This does not mean the design has to be minimalist, but it should not be crowded either. A crowded and congested website pains the human eyes and gives a sense of irritation to the website visitor.
Easy navigation: Easy navigation means the links in your website should be clearly visible and understandable to the site visitor and the site visitor should not face any problems to move from one page to another page of your website.
The site visitor should not find it tough to find any piece of information in your website.
The background color, font colors and styles should match each other with the overall theme of the website.

4] Dont design a website completely using flash. Even if you have to use flash and java scripts for your website try to keep them as minimum as possible.

5] Dont use unneccessary or irrelevant badges, images, ads, links and other useless other stuffs to fill in your website.