The Matchbox FAQ thread

We've had a few good discussions recently in the shoutbox so I wanted to start this ongoing thread. Any question, no matter what it might be (and I know Google could fix that too), we can use this thread to have a bit of a chat about any question we might have. We've already covered "what's so special about Bulgarians?" and "Is the current Routemaster casting retired for good after the 60th line?". So feel free to post more.