Hi! I want to show my views on comment format. First of all, the Thank button shouldn't appear and disappear when the cursor moves over each comment, it's annoying. The permalink icon is small so it's ok, but the Thank button is too big for that feature.
The date should be on the top right (as in Gmail), not at the bottom.
The extra details on the user and timestamp work fine, except that I would remove the seconds and the timezone, and shorten the timestamp to "Fri, 15 Nov 2013 14:04", so it's easier to read.
last but not least, where's the Reply button? I can't see it anywhere.