I've been thinking about charging a nominal download fee (for a sizable demo) and before I try it out, I thought I'd ask what you guys think of the idea. Here are some of the things I've been thinking about: 1) The huge numbers of people that download demos with no intention of buying them. Why should my paying customers foot the bill? 2) The mental barrier between a customer and 'that very first purchase'. 3) The common view that if something is free, it has no value.