(In reply to Joel from comment #0)
> It is also not possible to
> respond to a comment someone else has made, but one has to create a new
> comment next to it instead.
Just to clarify this. I was also under the impression that it wasnt possible to
do so, but it is. You click on the drop arrow of the comment you want to
respond to and you will be given the option to reply to it if the comment
originates from another user. It would be better for an icon to appear in the
same area that a user could click to reply rather than having them open up the
drop down to do it, as replying to a comment is a fundamental of commenting.