I'd say yes. The HTML is identical right down to the missing XML declaration.

pmjordan · on Jan 16, 2009

Leaving off the XML declaration is common because having it there causes IE6 to run in quirks mode. Although it's probably safe to say HN runs in quirks mode on all browsers.

pistoriusp · on Jan 16, 2009

This is true for Safari, Firefox, Opera and Internet Explorer browsers. Not providing a doctype whilst rendering text/html will make the browser render in quirksmode.