豆知识 2011-10-23&10-29 搜索引擎优化

 Imagine for a minute that you’re a librarian, but not a normal one. You’re a librarian for every book in the world. People depend on you every day to find the exact book they need. How do you do it? You need a system. You need to know what’s inside every book and how books relate to each other. Your system needs to take in a lot of information and spit out the best answers for a patron’s questions. It’s not an easy job.

 

 

 

Search engines like Google and Bing are the librarians of the Internet. Their systems collect information about every page on the web, so they can help people find exactly what they are looking for. And every search engine has a secret recipe called an algorithm for turning all that information into useful search results.

 

 

 

Now, if you own a website, search results matter. When your pages have higher rankings, they help more people find you. The key to higher rankings is making sure your website has the ingredients search engines need for their recipes. This is called Search Engine Optimization¹, or SEO. As it turns out, most of the big ingredients are known. Let’s take a look.

 

 

 

First, words matter. Search engines account for every word on the web. This way, when someone searches for “shoe repair”, the search engines can narrow results to only the pages that are about those words.

 

 

 

Second, titles matter. Each page on the web has an official title, but you may not ever see it because it’s in the code. Search engines pay a lot of attention to page titles because they often summarize the page like a book’s title.

 

 

 

Third, links between websites matter. When one web page links to another, it’s usually a recommendation², telling readers this site has good information. A web page with a lot of links coming to it can look good to search engines. But some people try to fool the search engines by creating or buying bogus links all over the web that point to their own website. Usually, search engines can detect when a site has a lot of them. And they account for it by giving links from trustworthy sites more weight in the recipe.

 

 

 

Fourth, the words that are used in links matter too. If your webpage says “Amazon has lots of books” and the word “books” is linked, search engines can establish that amazon.com is related to the word “books”. This way, when someone searches for books, that site will rank well.

 

 

 

Lastly, search engines care about reputation. Sites with a consistent³ record of fresh, engaging content and growing numbers of quality links may be considered rising stars and do well in search rankings.

 

 

 

These are just the basics, and the recipes are refined and changed all the time. Good SEO is about making sure your website has great content that supported by the ingredients that search engines need for their recipes.

1 optimization   

n.最佳化，最优化；优选法；优化组合

参考例句：

• Development of detergents has required optimization of the surfactants structure. 发展洗涤剂时，要求使用最恰当的表面活性剂结构。 来自辞典例句
• In the case of productivity tools and other non-entertainment-oriented products, this optimization means minimizing work. 对于生产工具和其他非娱乐导向的产品而言，这意味着将工作负荷降至最低。 来自About Face 3交互设计精髓

2 recommendation   

n.推荐（信）建议，优点，长处

参考例句：

• I wrote him a good recommendation.我为他写了一封很好的推荐信。
• This method deserves recommendation.这种做法值得提倡。

3 consistent   

adj.坚持的，一贯的，一致的，符合的

参考例句：

• He has been a consistent friend to the Chinese people.他是中国人民始终如一的朋友。
• His action is always consistent with his words.他始终言行一致。