网站上线了，如果您想要知道您的访问者是如何找到您以及他们是如何与您的网站互动的，Google Analytics（分析）可以告诉您所有相关信息。
概念 Web analytics Google Analytics
Web analytics provides the tools for gathering this information and enables you to benchmark the effects.
web analytics covers many areas that require different methodologies or data-collection techniques. For example, offsite tools are used to measure the size of your potential audience (opportunity), your share of voice (visibility), and the buzz (comments/sentiment) that is happening on the Internet as a whole. These are relevant metrics regardless of your website’s existence. Conversely, onsite tools measure the visitor’s onsite journey, its drivers, and your website’s performance. These are directly related to your website’s existence.
Web analytics is a business process used to continuously improve your online business.
Google Analytics is a tool to quantitatively measure what happens on your website. Google Analytics is an onsite visitor-reporting tool
Just because you have Google Analytics does not mean you are doing web analytics.
Google Analytics 在线分析工具
Web analytics范围更广，包括离线、在线分析
术语表
www.google.com/support/googleanalytics/bin/topic.py?topic=11285
如：Google Analytics Tracking Code（GATC）
访问地址
http://www.google.com/analytics 使用google账号登陆即可
Google Insights (http://www.google.com/insights/search/) 搜索解析
实施分析的步骤：
1. Gather and document business requirements.
2. Analyze and document website architecture.
3. Create a Google Analytics account and configure profiles.
4. Configure the Google Analytics tracking code and tag website pages.
5. Tag marketing campaigns.
6. Create additional user accounts and configure the following reporting features:
• Report access
• Automated email report delivery
• Reporting customizations (Custom Reports, Advanced Segments)
7. Perform the following optional configuration steps:
• Enable e-commerce transaction tracking
• Implement event tracking
• Implement custom variables
Google Analytics 的工作原理
Google Analytics 的账号关系
具体使用时的步骤：
1、注册账号，绑定相关的url，并设置跟踪的信息
2、在绑定的url上的网页上加上跟踪代码片段
3、一定的时间后即可查看网站的访问情况报表
除了这个免费的分析，google还提供了一个离线的收费的软件URCHIN http://www.google.com/urchin/
这两者的选择依据：
Google Analytics is much easier to implement, has stronger AdWords integration, and by comparison is maintenance free.
Urchin is the best fit Select Urchin if:
• You have an intranet site behind a firewall that blocks Internet activity. Google Analytics is a hosted solution that needs access to the Internet in order to work.
• You are unable to tag your pages.
• You are a hosting provider wishing to offer visitor reports to thousands of customers. Urchin has a command-line interface that can be scripted to create and modify multiple website reports at once. That is, Urchin has greater flexibility when it comes to large-scale, multiuser deployments.
通过如上的一些步骤，可以对网站进行轻松的分析和查看各种报表了，当然还可以使用google api查看其中的各种信息，具体可参考 http://www.cnblogs.com/2018/archive/2011/09/08/2171843.html