>let anyone who feels it is worth pay for it. Don't rely on altruism to be a good indication of real demand. People like to get good deals. When you get for fr

>let anyone who feels it is worth pay for it. Don't rely on altruism to be a good indication of real demand. People like to get good deals. When you get for free something that is of good value -- it's a good deal and most people will go for it. The freemium model would work better to estimate demand.