As a new user and therefore perhaps "fresh eyed" to the site, I found the following a bit confusing:
In the main menu Questions you find a sub entry called Unanswered.
But in main menu one also find "Unanswered" as it's own entry (and sub-menu "no answers").
Have a look at the image,
Trying a little forth and back I now realize the difference, but perhaps an improvement can be made here simply by choosing some other title (ie. Non-responded or unsolved... ).
Besides from that, excellent pages and site!