We use Google Analytics (GA) for all our sites and most of our client sites. It often provides the most bang for the buck and makes slicing and dicing your analytics pretty easy to do.
On of the most interesting sections of Google Analytics is in the Visitors section and it is called User Defined. This is an area that allows you to create some customized “tags” or “labels” for any of your visitors.
I could go on and explain all the nitty-gritty details, but guys over at Google Analytics have already posted a very detailed explanation on how to implement this capability and shows how it can provide additional value to the tremendous value that GA already provides.
To review all the User Defined details you just use the links already created in this post.