Write your pages for people, not for se's. It seems obvious, doesn't it? We have all visited webpages with garbage material written to deceive se's for top level ranks. When discovered (and they'll be discovered), these sites are prohibited. Other SEO directions prohibit offering different material to search engines than these potential customers. My family friend found out about visit my website by browsing newspapers. Called \\cloaking\, it is yet another and illegal technique to avoid for high search engine ranking positions. Instead, focus on providing useful content your visitors would like and update your website usually with new content.