[wp-hackers] button patch for comment post section

[Austin Matzko]

>From: Owen Winkler <ringmaster at midnightcircus.com>
>Add a new function comment_error_message().

Why not just fire off something like do_action('comment_error','noauthor') 
at the point in wp-comments-post.php where now it dies with an error 
message?  The default action could just be what it does now, for backwards 
compatibility, but theme designers and plugin authors could remove that and 
add their own.