Since Google has biases towards informational resources, large websites that are rich in unique content and with web pages that reach up to over 500 can rank well in the search engine results page. However, web marketing experts say that there should nothing to be worried about if you have a one-page sales site.
There are things that should be done to rank well and even generate traffic for both large and small websites.
(a) Large websites need to be maintained heavily with content or information to draw more readers which are traffic. Rich content would also draw the search engine spiders to crawl your site. Articles are a great help in targeting your traffic through the keywords that you employ anywhere in your articles. Adding article content a day is recommend so that search engine spiders would index more web pages of your site.
(b) Small websites such as one-page sales sites can still find its way to success in generating traffic. You have to spend time building relationship with your targeted market. Submitting articles that speak about your business to various online magazine or article submission services is a great help. Submitting press release articles and even advertising your business through print media such as local newspaper would be worth it of your time and effort.
There are no scientifically specific guidelines in selling a product or business online. However, web marketing experts admit that tidbits of advice from the experienced online entrepreneurs is a big help.