Trackback URLs not to be clicked

A friend posts in a list that he would like Googlebot not to click on the
trackback URL's offered by his blog.
I think that TB Url's are not to be clicked, neither by humans nor by robots.
They're just to be copied by bloggers to paste them into their own posts.
In this Coreblog of mine I touched the templates to let the TBping URL
appear in a
"text input" field. I feel like it's easier to copy a line of text when
it's in an input field like
that.