Highlight if link targets in comments don't refer to the link text

[Presskopp]

I'm thinking of some kind of solution to warn if links in comments are not what they seem to be to give a little security extra. They can be misused to inject bad stuff if clicked as an admin. I changed class-wp-comments-list-table.php to show a hint like on the screenshot to show you what I mean. What do you think? How could this be done in a non disturbing way? Or don't we want it at all? You decide.