There were many good candidates to choose from this time around, and the decisions weren't easy. As Dave has said, we will eventually be looking for more later on, so keep an eye out.
Oh, and not all who become mods even volunteered.
The PM came as a complete surprise, but a good surprise. People's actions, attitudes, and words are help us to see who would be a good mod. I guess we're sort of like Santa Claus...