While already logged into DJ, clicking "yes; always" got me a "failed to save" error message, but clicking "yes; just this once" resulted in the comment posted above.
(Note that I had already attached an icon to my IJ-via-OpenID presence at DW sometime in the past, so the preceeding comment shows up with an icon even though it was posted from a non-DW account.)
DJ needs tweaking
more examples