The guidelines are common for the search engines, like yahoo, MSN and Google, but some are different guidelines also. It's required to have good knowledge of search engine guidelines and tricks of search engine optimization to increase the ranking a website in the search engine.

All three major crawlers – Google, MSN (Windows Live) and Yahoo – offer comprehensive, webmaster-friendly help sections on optimizing your site. Before looking for SEO help elsewhere, make sure you got the basics down by following the rules of the game.

What Search Engines Want

Yahoo, Google and MSN may differ in their requirements for web sites, but there are some things all three search engines have in common. These are the most fundamental elements of a search-engine-friendly site:

Links
All major crawlers would like to see other relevant sites link to yours. At the same time, all three discourage the use of link farms and irrelevant link exchange programs. To learn more about the current state of link popularity campaigns, please read our article Real Link Popularity.

Information and content
Search engines would like to see content-rich sites that are created for people, not search engines. This means no doorway pages, cloaking, stuffing text with irrelevant terms and so on. Instead, create a site that your users and potential clients will find valuable. Search engines will follow.

Dynamic pages
Don't use over-complicated URL structures. Long URLs with different parameters are harder for search engines to index. In case of Google, they may be buried in the supplemental index (backup database).

Static text links
Search engines follow more pages by crawling your web site. To make this process easier, make sure that all pages are connected with a static text link. You can achieve this by employing a good navigational structure and creating a site map.