I'm curious as to what's happened in the past five months, with regards to the Skype protocol. I know that in July, a talented reverse engineer did what those before him didn't want to bother with (PDF, slide 52/72) and reimplemented the seed-to-RC4-key function (the core of Skype obfuscation/encrypted messages) in nearly 3000 lines of C. He was supposed to present at 27c3, but apparently didn't. The code, however, is still out there.
As a major fan of open-source software, I'm wondering: has anyone bothered documenting the (current) Skype protocol? I'd love to see a free/open-source implementation of the Skype protocol, say, for Telepathy. If the docs exist out there somewhere, then it shouldn't be terribly hard to write - Telepathy was made to be quite flexible. If, on the other hand, the protocol is still undocumented, well, maybe I have a good semester project. How to construe this as a computer security project...hrm.
Activities? Plasma has had these for years. Notifications system? KDE led the design of the freedesktop.org spec that's in use by all. And it ships in 4.5. Keyboard launch/switch? See KRunner and its multitude of searchable capabilities. System settings? Let's not go there again. Window tiling? Shipped in KDE 4.5; now I can't operate efficiently without it. Netbook interface? Marco Martin did that in time for KDE 4.4. Dark application themes? Is that even a feature? (If it is, KDE's had the Obsidian Coast theme since at least 2006.)
I'm not saying that GNOME isn't an awesome software project; it absolutely is, and provides a ton of people with exactly what they want and need. I'm just noting that KDE is the innovation powerhouse and ships good ideas, despite its comparable lack of commercial funding.