Is all of this k3wl AJAX really needed? What really gets me is comments. Surely, surely, surely, the comment text is small and the show comments could just unhide the HTML, or insert the text from an embedded string. At the moment, there is a pointless, irritating wait whilst a server round-trip is performed. It takes more than 50-100 ms and is therefore evil.
(Just don't get me on the subject of Slashdot, Twitter, etc., retarded and unreliable AJAX.)