are more manual pingbacks (see earlier message)

When you write a blog message about an article in another blog you need to include a Trackback URL which you get from the other blog. The results is the same as a pingback – your blog message becomes a comment on the other blog.

So are they useful? For connecting blog posts / articles / messages (which is correct???) I guess so but will users get them. Mind you as pingbacks are automatic they don’t really need to.

I’ve included a trackback URL in this message for the Pingback post! If you look at the Pingback post you’ll see this message is a comment.