การเพิ่มประสิทธิภาพการค้นหา (SEO)
The Internet is the yellow pages for the world. There are about 19.2 billion documents on the internet. About 7.3 million pages are added daily. In any category you can image there are countless thousands of listings, generally millions. The competition is very stiff because all businesses want top rankings, but only a few can be on top. Bottom line: if your website is not on the first page, it is invisible. Almost nobody search past page one. There are no books by Google or Yahoo that explain exactly how to make websites top ranked.