Oh, and the button you use to ping the map in Dota is right next to the button which, on my bootcamped setup, crashed the game. I was also often playing while sitting on a bed, using a Where The Wild Things Are gift box to rest my mouse on.
I had to run Skype through my phone to use voice chat with friends, which meant I couldn't have sound on from my laptop, so I spent months of Dota not playing with any of the sound cues which are essential. I put off buying a desktop PC for as long as possible, making use of a bootcamped Macbook to play games including Dota 2.