Are 1 page sites harder to rank? Let's say I have an ebook how-to product. I have 3 kws that I target. Should I write 3 separate sales pages and optimize each sales page for one of the 3 kws? Or should I 3 unique articles, make each article a web page (thus making my site 4 pages instead of 1), and SEO each article page individually? What should I do to make my single page sites overcome the stigma of being "small"?