Sticky a message to the top of the comment section

[Shinni]

I would like to be able to sticky a comment to the top of an addon's comment section, or the option to have some text always displayed on the top of the comment section.
Users often post comments regarding issues that are already fixed, covered in the FAQ, not related to the addon, not containing requested information etc.
I don't want to give the same answers/requests over and over again, so I would like display some text starting with a nice fat red "READ BEFORE POSTING".
Adding that to the addon description doesn't help, because noone reads the addon description of an addon they already know, but I hope it has more effect if that text is right next to the post-comment-button.