Understanding TrackBacks
If you are already blogging, you might be looking at your software or blog provider while reading this section, saying “What the heck is he talking about? I don’t see any option for TrackBacks.” Perhaps your language is even stronger. Perhaps instead of “option” you are saying “danged option.” Curb your temper and let me explain.
TrackBacks are A way for two sites, each running a blog, to communicate with each Other or a form of remote commenting, allowing multiple bloggers to have a conversation spread out among their sites
TrackBacks were invented by SixApart, one of the major blog software and hosting providers. TrackBack was introduced in August, 2002. SixApart intended, and still would prefer, that its TrackBack feature become standard equipment in all blog platforms and services. TrackBack is an open standard and costs no money to implement. It attains greater usefulness as more blogs have it available. But many blog platforms do not use the feature, and therefore many blogs do not display TrackBacks and cannot track back to other sites.
Keep in mind that a TrackBack is a communication between two sites, so both sites must be empowered with the TrackBack feature for it to work.