Yup, but mine is actually is the machine I'm using and it is now running things like MS SQL Server. I can almost physically feel its pain while running a transaction.
Skim reading helps, if that's what you mean.
Also, I frequently have to wait for my computer to finish some task which takes too little time to play the game meanwhile, too long to just wait, and just enough to read through a couple of threads.
Yes, but it is all about cost of the capital. If you get $1 today, you could invest it to get, say, $1.2 tomorrow, so $1 today = $1.2 tomorrow. If sales are slow, that means you are actually losing money you could get, so early sales > late sales.