Screen real estate
A small suggestion:
When opening many topics, for example the Windows one, my browser window (19" monitor @ 1280, window not maxed but taking up a fair amount of the screen) is filled with too much dead space at the top of the window. All i can see is the advert and the stickies!
Allow me to illustrate if i may:
The following screenshot is my browser window. I feel a lot of the space above, and perhaps below, the advert could be removed (as we have other indications of where we are). I think we could easily trim a good inch off that. My scrolling finger can't take it any more! :)