It is good to have (some people experience the text disappearing from the textbox when they go back) but can be a little confusing (not for us because we know where everything is / what everything does).
User-intuitive is the biggest goal for me.
As an example, on your post screen Gerrit you have a tickbox: "Email a notification when someone replies to my real email address."
I know what this means and what will happen if I tick it.
I imagine many people who are unfamiliar with w3t or even web boards in general would find this option confusing, at least in part due to the wording.
We have to remember we know wwwthreads inside out.
Whilst I haven't mentioned this before, as customisings are great, I feel about half of the hacks floating around out there add features + confusion.
However I always look forward to new releases and their added features because Scream has done a great job picking the necessary ones so far.
I hope this slight criticism is taken as constructive.
Darren.
http://www.bullpen.com.au