Just Sangern's

这应该是最最基本的原则了：
搜索引擎的宗旨在于提取互联网中质量最好的内容提供给用户，任何有利于帮助用户获得相对公正，优质内容的策略都是搜索引擎追求目标。

下面这些也应该是网站设计中需要注意的最基本的原则(面向搜索引擎的网站设计)：
Make a site with a clear hierarchy and text links. Every page should be reachable from at least one static text link.  
让网站有着清晰的结构和文本链接，所有的页面至少要有一个静态文本链接入口
批注：尽量不要用图片和JAVASCRIPT
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 the site map into separate pages.
为用户提供一个站点地图：转向网站的重要部分。如果站点地图页面超过100个链接，则需要将页面分成多个页面。
批注：索引页不要超过100个链接：SPIDER只考虑页面中头100个链接
Create a useful, information-rich site and write pages that clearly and accurately describe your content.
用一些有用的，信息量丰富的站点，清晰并正确的描述你的信息。
Think about the words users would type to find your pages, and make sure that your site actually includes those words within it.
想像用户可能用来找到你的关键词，并保证这些关键词在网站中出现。
批注：少用“最大”，“最好”之类的形容词，用用户最关心的词，比如：下载，歌星名字，而不是一些抽象名词。
Try to use text instead of images to display important names, content, or links. The Google crawler doesn't recognize text contained in images.
尽可能使用文本，而不是图片显示重要的名称，内容和链接。GOOGLE的机器人不认识图片中的文字。
Make sure that your TITLE and ALT tags are descriptive and accurate.
保证：页面的TITLE和ALT标记正确的精确描述
Check for broken links and correct HTML.
检查坏链并修正这些HTML错误。
If you decide to use dynamic pages (i.e., the URL contains a '?' character), be aware that not every search engine spider crawls dynamic pages as well as static pages. It helps to keep the parameters short and the number of them small.
如果你打算使用动态页面：链接中包含"?"，必须了解：并非所有的搜索引擎的机器人能想对待静态页面一样对待动态页面，保持动态页面的参数尽可能的少也会很有帮助。
Keep the links on a given page to a reasonable number (fewer than 100).
让一个页面中的链接少于100个。

更多请参考这里：Google官方的站点设计指南

Avoid hidden text or hidden links.
Don't employ cloaking or sneaky redirects.
Don't send automated queries to Google.
Don't load pages with irrelevant words.
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 programs with little or no original content.
If your site participates in an affiliate program, make sure that your site adds value. Provide unique and relevant content that gives users a reason to visit your site first.