in reply to POST and automatic redirecting?

I've always thought voting would be the ideal candidate for AJAX (not every use of AJAX is Evil, believe it or not). From a purely UI point of view, it's a pain to have to scroll to the bottom of the page to click the 'Vote' button, especially if there are a lot of replies.

But even without that, it's becoming a standard to redirect after a POST, rather than having the POST action display content.