KDE articles
Usually I follow developments in GNOME more closely than those in KDE, mainly because Xfce is more closely related to them using the same toolkit and all.
But I just saw two blog entries about KDE4 that were quite interesting to read for anyone interested in desktop development. The level of integration they are talking about is not something that Xfce offers, or probably should even want to offer, but they make some good points about general desktop and application design.
Oh, the articles I am talking about are by Mathias Ettrich and Ben Meyer.