I have been a Yakuake user and fan for as long as I can remember. Seeing as I use the terminal roughly 75% of the time while using my computer, tabbing back and forth between either Yakuake tabs or Konsole tabs gets to be tedious after a while. Well, Sho_ and gang over at KDE have totally kicked arse with a new 2.8 Beta release. The new one still has all of the tabs, however each tab can have as many split windows as your eyes can handle. For an idea of what this looks like, take a look at the image below (click for larger image).
If you are using Kubuntu, building this package is a breeze. Save the package into a separate directory (~/downloads is what I use) and issue the following commands in the terminal (Konsole):
cd ~/downloads #change to the directory you downloaded it to
tar -xvjf yakuake-2.8-beta1.tar.bz2
./configure && make && sudo make install
NOTE: If the package does not configure properly, then you may need to install kdelibs-dev from the repositories.
To run it, simply go to KMenu->System->Yakuake.