Make pages for users, not for search engines. Don’t deceive your users or present different content to search engines than you display to users, which is commonly referred to as “cloaking.”
Avoid tricks intended to improve search engine rankings. A good rule of thumb is whether you’d feel comfortable explaining what you’ve done to a website [...]

Make a site with a clear hierarchy and text links. Every page should be reachable from at least one static text link.
Offer a site map to your users with links that point to the important parts of your site. If the site map is larger than 100 or so links, you may want to break [...]

Avoid hidden text or hidden links.
Don’t use cloaking or sneaky redirects.
Don’t send automated queries to Google.
Don’t load pages with irrelevant keywords.
Don’t create multiple pages, subdomains, or domains with substantially duplicate content.
Don’t create pages that install viruses, trojans, or other badware.
Avoid “doorway” pages created just for search engines, or other “cookie cutter” approaches such as affiliate [...]

When i signed in to Google webmaster tools i saw something which got me thinking that google has finally started utilizing Google webmaster tools to get some helping hand from the webmaster community to deter link selling and link buying.
So my suggestion to my clients and friends in the seo industry, stop buying and selling [...]

According to a new study conducted by Massachusetts Institute of Technology, the University of Washington and Yahoo.
Forty percent of all search queries are repeat queries from users trying to find information they have found before, according to this study.
If the time gay is too little between their searches, then they are looking for other results, [...]