Though I think Activision holds the title of most evil games company currently.
Yay, my Minecart system is up and running! Its a bit clunky in the game, as I basically have to drop a chunk of coal in the powered cart while facing the direction you want to go, then run and jump into the regular cart in front before it takes off on you. The power cart basically nudges you forward. Only a couple of misfires so far. Like the time I had to chase it across country when I jumped in, missed, and a skeleton ended up hijacking it!
And I opened up a second mining shaft. Down to the core, then I basically built a small room at the bottom and started sending shafts out in all directions like the spokes of a wheel. Eight diamonds and lots of iron in just the first half hour. Woot!