今天收到的一封关于SEO方面的邮件，其中提到一项关于网页加载速度的改进对搜索引擎的影响，感觉非常有理。
Greetings all,
Even with increasingly fast Internet access and responsive browsers, online visitors have little-to-no tolerance for slow websites. No pun intended, but the quest for faster websites is a never-ending race for web designers and developers alike. Several surveys and research projects have revealed that a strong correlation exists between page speed and overall user experience, which ultimately governs conversion rate and engagement levels. According to some of these surveys, nearly half of all web users expect a site to load within three seconds or less. Further, a one-second delay in page response decreases user satisfaction by 16 percent.
In addition to affecting user experience, site load time is now also a factor search engines use to determine rankings. And, of course, optimizing a web page can help significantly in reducing operating costs such as bandwidth and other server resources. Several techniques can help in optimizing site speed, and the good news is that most of them aren't that difficult to implement.
Our featured article this month teaches you how to speed up your site to meet the expectations of visitors and search engines.
We've compiled a list of tools to help you measure your site's speed and identify bottlenecks. We'll also review techniques like CSS sprites, JavaScript minification, lazy loading, and CDN. | 
发表于 2013-2-1 19:16:50
发表于 2013-2-1 21:47:46
楼主
发表于 2013-2-2 12:24:48