They're given away to make use of 'em. Not to make money out of it. (instead of forcing 'em to buy from PUS, they can get 'em through that way)
They stay because they agree with us. The only people who disagree(and they're not even playing) are the ones complaining. All this discussion helps us to attract way more users than we lose, because definitely there are way more who agree with us than those who disagree, but enough 'cause I got tired.
As for you ISpitOnYourGrave, I'd never expect from someone who cancels a DONATION (http://en.wikipedia.org/wiki/Donation) to even bother with us anymore. You make me wonder why I bother'd to unblock your PC in first place. (oh forgot, it was kallops favor)