Davy's Blog

Caching HTTP Headers, Cache-Control: max-age

Caching speeds up repeated page views and saves a lot of traffic by preventing downloading of unchanged content every page view. We can use Cache-Control: max-age=… to inform browser that the component won’t be changed for defined period. This way we avoid unneeded further requests if browser already has the component in its cache and therefore primed-cache page views will be performed faster. Modern browsers able to cache static files even without any cache control headers using som...

用户是如何浏览你的网站的

8 Heatmap Tools and Why / How to use them 事实上，互联网用户浏览网页的习惯和顾客浏览商店中物品的习惯没有多大差别。用户打开一个新的页面，扫视一些文字，并点击第一个引起他兴趣的链接。 在这过程中，页面上有大量的区域用户甚至完全没有看过。大部分用户在页面上寻找他感兴趣且可点击的内容，一旦发现目标，点击行为就会发生，但如果页面不符 合期望，后退或关闭按钮也将马上被点击。 用户是如何浏览你的网站的 1. 大部分时候用户并非在阅读屏幕上的内容，而是在扫视。 用户习惯扫视和快速寻找页面上一些能够引导他理解内容的关键点。 2. 不要考验用户的耐心 当一个页面不能满足用户的期望时，离开就在所难免。希望通过添加相关内容来丰富页面和留住用户往往效果不佳甚至适得其反。一屏页面上承载的信息越多，认知 的负担就会越重，就需要花费更多的时间去处理信息，如果这些信息中还有些不是用户期望的，那就还要花额外的精力将这些多于信息从注意力中剥离。Jakbo Nielsen 的研究结论也表明：一个页面上的认识负担越重，导航和浏览就会越困难，用户离开并寻...

8 Heatmap Tools and Why / How to use them

Heatmaps visualize the stream of visitors on your website - showing hot and cold click zones. They provide an overall view of the activity and helps you to see every mouse movement and every click. It will improve web usability, conversions and revenue. In this post you will learn where you can find free services or tools, how and why you should use them. Reasons to use heatmaps * See, where people don’t click and why. It helps to… * Optimize landing pages * Optimize link & adver...

The SEO Tips

Title: A good title has between 10 and 70 characters (including spaces), and contains your primary keywords and phrases. Be sure that each page has a unique title. http://blog.magnoliasoft.net/2009/01/title-tag-best-practices-10-step-guide.html Meta Descriptions: The Meta Description Tag doesn’t affect your page's ranking in the search engines (for the most part), but it is still important for your SEO. Google may choose to display meta descriptions in the search results, this will h...

How to Set Up A Custom 404 File Not Found Page

It is very easy to Set Up A Custom 404 File Not Found Page. First, you need create a custom 404NotFound page, for example: 404NotFound.php Then, open .htaccess file, add following line to the file: Here are some cool 404 page you may want to see. Find another cool custom 404 pgae : Custom 404 with jQuery and jQuery UI

英文SEO论坛和博客推荐

SEO论坛 站长世界WebmasterWorld.com 如果你只有时间看一个论坛和博客，那就看这个。站长世界包含的不仅仅是SEO，还有很多关于建站的内容，服务器技术，广告，电子商务等等。几乎所有做SEO应该了解的东西，都可以在站长世界里找到。 SEW论坛 SearchEngineWacth搜索引擎观察是最早提供搜索引擎新闻和知识的网站之一，论坛版主也都是搜索引擎业界重量级的人物。 DigitalPoint论坛 另外一个经常会出现很有意义话题的论坛。 High Rankings SEO Forum 有时间也建议看看。 SEO博客 极力推荐的SEO博客包括： Matt Cutts的博客 – 重要性就不必再说了，最好每篇都仔细阅读。 SERoundtable – 及时总结与SEO有关的论坛和博客里有价值的帖子，内容挑选非常精确。 SEOmoz – 这个公司的老板Rand是我最敬佩的SEO专家之一，对SEO技术的分析非常深入。 Jim Boykin – Jim也是SEO业界响当当的人物，尤其擅长外部链接分析。...

Using Page Speed to improve web performance

Page Speed is an open-source Firefox/Firebug Add-on. Webmasters and web developers can use Page Speed to evaluate the performance of their web pages and to get suggestions on how to improve them. By using Page Speed, you can: Make your site faster. Keep Internet users engaged with your site. Reduce your bandwidth and hosting costs. Improve the web! http://code.google.com/speed/page-speed/ YSlow analyzes web pages and tells you why they're slow based on the best practices for...

Online SEO Tools – The Ultimate Collection

Ann Smarty from Search Engine Journal, recently wrote a great article reviewing all of the SEO tools out there. If you are an SEO or want to be one, I highly recommend checking it out.

Google’s SEO Starter Guide is now available to download

Search Engine Optimization Starter Guide covers around a dozen common areas that webmasters might consider optimizing. Available in 40 languages! http://googlewebmastercentral.blogspot.com/2008/11/googles-seo-starter-guide.html

Search Engines Unite On Sitemaps Autodiscovery

Last November, Google, Microsoft and Yahoo united to support sitemaps, a standardized method of submitting web pages through feeds to the search engines. Today, the three are now joined by Ask.com in supporting the system and an extension of it called autodiscovery. This is where the major search engines will automatically locate your sitemaps file if the location is listed in a robots.txt file. Announcements are up from Google and Ask now Yahoo and Microsoft. Information on how to c...