Great summary of trackback technology, plus a Video Guide to Understanding Trackbacks for Beginners.
Trackbacks are often misunderstood and so seldom used by new bloggers. Trackback is a powerful way to get content recognition from search bots crawling the rich blog link structures, it is a great way to alert others to your content as well as receive notice when other bloggers are referencing you. Trackbacks are a good way to get inbound links and generate FREE traffic. Trackbacks are definitely a powerful content promotion and distribution strategy. When used properly, Trackbacks can get you noticed and get you traffic