There are many benefits to both the visitor and the website owner of having fast loading, standards compliant and accessible websites.
The user is more likely to find your site, be able to view it easily, find what they want and overall, enjoy a better experience.
The owner can reduce their development and maintenance costs and attract more visitors.
Fast loading web pages & websites
You have but a few seconds to grab the attention of your audience. Unless a service is totally unique, most of them will click the "back" button (or bounce) if a website fails, or is slow to load. In other words slow websites will lose visitors and potential customers.
Search engines monitor the bounce rate of pages, giving higher rankings to those that are loaded. Fast loading pages are also perceived as being of higher quality than those that load slowly.
It is therfore important that the pages within your website load as fast as possible. The web pages I code are measured against Yahoo and Google algorithms for load speed. The pages are then optimised to give the smallest file size and fastest download speed, without compromising the look and feel of the website. Websites are not signed-off until a grading of "A" has been achieved.
Building fast loading pages also reduces bandwidth requirements and can thus reduce hosting costs.
Reducing page load times can reduce bounce rates and increase conversion rates
The need for speed MIT Technology Review
When seconds count Gomez
Standards compliant & accessible websites
Using web standards provides a better cross-browser experience for the end user. Web pages will appear as intended and not appear "broken", reducing the risk of losing visitors.
Standards compliant coding increases the visibility of your web pages to search engines. The easier it is for search engines to process and evaluate the information, the more accurately they will index web pages.
Seperating the styling from the content, as is the case with standards compliance, means that changing the appearance of a website can be achieved much more easily. Redevelopment costs can be reduced as a result.
When redevelopment is required, the use of standards means that you are not tied to the original website developer, as any developer will be able to understand the original code.
Web standards increase accessibility and thereby the audience.
Why use incorrect website code, if semantic, compliant coding helps visitors and search engine spiders alike?
Designing and building with these standards simplifies and lowers the cost of production, while delivering sites that are accessible to more people and more types of Internet devices.
The Web Standards Project
What are web standards and why should I use them? The Web Standards Project