So, after more twiddling, I have sped up the loading of the search mode of the Featured, All, and The Day's Art pages.
I have also added a new Notification bar at the very top of the site. In addition to it being the new home for the Facebook like button and, now, the new Twitter and Google +1 buttons, the notification bar will be used to deliver member and buyer targeted messages.
Also, I have moved, once again, the link to the challenges. I have done this, not just to keep you all on your toes, but because I have received feedback that artists have sold work through the challenges. For this reason, I have moved the link back down to the buyer-focused main menu.