When navigating via keyboard shortcuts, it can be difficult to tell what comment/post that you have selected, since there's no way to tell, other than seeing what post/comment moves up, or is affected.
One way to do this might be to highlight the current active post/comment, whether with a box around it, or by highlighting it, in much the same way that comments are highlighted when the cursor hovers above them.
When navigating via keyboard shortcuts, it can be difficult to tell what comment/post that you have selected, since there's no way to tell, other than seeing what post/comment moves up, or is affected.
One way to do this might be to highlight the current active post/comment, whether with a box around it, or by highlighting it, in much the same way that comments are highlighted when the cursor hovers above them.