The term trackback refers to a relatively simple process. A trackback itself is an acknowledgement, a way for blog authors to be alerted when another blog is discussing or linking to a particular entry. Trackbacks originated as a way for bloggers to acknowledge one another through pinging, which is the term used to describe the act of sending a trackback alert. In order for this to work, both sites need to have the trackback features enabled.

You may wonder why tracking back to someone's entry is useful. Bloggers like to know when someone is talking about their entries, especially when that talk is positive. A blogger's readers might want to see what other readers are saying about a particular blog entry, and with trackbacks, they can easily find a list of the sites that reference it. People may find these stuff interesting, and it helps to keep things flowing in a serendipitous manner.

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