[wp-hackers] Duplicate Comments/Pings

[Mark Jaquith]

Is there any reason that anyone knows of why WP doesn't discard 
duplicate comments or trackbacks or pingbacks on the same entry?  
Sometimes people hit "Post Comment" twice, or their blog software sends 
two pings in a row.  It would be really easy to check on submission if 
the comment or trackback is a duplicate and discard it, if it is.  Can 
anyone think of a good reason not to do this?