Web Design Guidelines!!!

Hi friends,
Few days ago I got few guidelines about web designing from newhampshirewebdesign.com. It's really nice and helpful and I also want to share with you.
• Reviewing and testing your website in all the major browsers
Your final design will be compatible with Windows and Macintosh platforms and current versions of Netscape, Mozilla, Opera, and IE browsers.
• Optimizing your site for various screen resolutions
We test your design and make sure it looks good at a screen resolution of 800 X 600. This is the lowest resolution that manufacturers specify for most computer monitors.
• Ease of Navigation
Navigation is one of the key components of a successful website design. Visitors that use your site should be able to find exactly what they are looking for without extensive searching and wasted time.
• Optimized for search engine rankings
High ranking websites include all relevant key words in the Meta-tags and throughout the copy of the website. One of our goals during each engagement is to create and implement Internet marketing strategies to generate new business through search engine optimization.
• Aesthetically pleasing
We can follow your corporate style specifications including your company’s corporate colors, font treatment, and logo usage or can recommend an entirely new Brand image for your company. We understand that key word frequency on a website is critical in search engine optimization while the artistic use of empty space and images is a critical factor in creating an aesthetically pleasing website. The key is to strike an appropriate balance between basic graphic design principals and business functionality.
• Content rich
The best web sites are rich with content and updated on a regular basis with current service offerings, press releases, and events. We will work with you to make this a priority.
• Capture Valuable Marketing Data
Good websites prompt visitors to provide valuable marketing data. We will help you use your website and an interactive marketing tool to generate new business and communicate with your existing clients.

your mentioned tips are really workable.But as a web designer i think that if your website looking gorgeous then you can get too many visitors.