Reading or scrolling through content is similar to how we read a book. It is better if the web page is organized left to right, and provides top to bottom scrolling. Web designers must understand this pattern when they are designing a website.
Majority of the readers start from the upper left area of websites which is why it is recommended that the most important source of information is placed here to get your message across the users.
Using visible areas for important website details can improve the SEO of your site. This happens when you include your important keywords in your HTML text. Search engines like Google, Yahoo, and Bing crawl through your site and it results in higher search ranking, which means more exposure to your website.
To sum up, most businesses are changing their designs for their customers. Those who already have, are now reaping the benefits. With the help of such a web design, users are able to get useful information at any time of the day, which is beneficial for both the business and the customer.