这就是有一些链接后面的 query string 有 utm_source、utm_medium 和 utm_campaign 的原因,比如 http://www.abcppc.com/?utm_source=Chicago%2BTribune&utm_medium=Newspaper%2BOctober&utm_campaign=Chicago%2BPPC%2BSale 对很多人来说这些是旧知识,但对我来说是新的:) What is a UTM code? A UTM code is a simple code that you can attach to a custom URL in order to track a source, medium, and campaign name. This enables Google Analytics to tell you where searchers came from as well as what campaign directed them to you.
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