News sources often show user comments in reverse order, with newest comments first. That’s useful when comments aren’t usually threaded or there’s a lot of them.
For Wordpress, it needs either a plugin or some hacking. The manual tweak is quite simple. Just replace in comments.php this:
foreach ($comments as $comment) :
for this:
foreach (array_reverse($comments) as $comment) :
There’s more info in the Wordpress support forum.
