Ok, so I see something interesting here but I want to talk about it more on my blog.
I take this URL called a Link Back URL here
What is a trackback?
Then I put that on my blog along with my take on the subject. Now at this point this is no different than just providing a link to another site that inspired you to write on your own blog.
Now unless the blog or site you grabbed the link back or trackback supports automatic what I will call "reverse trackbacking" then on the original site there is no reference to you posting something on your site. Is that right? Won't it be just as easy to leave link to your blog post on the original site? And put a link to the original article on your site?
Where is the advantage if you can't be sure the original site does "reverse trackbacking"?