Here's a good diagram and description of what a trackback is when I typed in "What is a trackback" into Google:

http://www.marketingtechblog.com/tec...y/blog-jargon/

You can find the blog entry mentioning your blog entry by clicking on the "URL" link listed in the trackback.

You're welcome to approve or reject any trackback you receive. Many times nowadays, they are spammers who use the function to increase links back to their own spammy blogs.

DocJohn