The Humble Bundle Bitcoin FAQ might be worth checking out: <a href="http://support.humblebundle.com/customer/portal/articles/1139817-bitcoin-faq" rel="nofollow">http://support.humblebundle.com/customer/portal/articles/113...</a><p>Seems mostly addressed at existing Bitcoin users with a very short two-sentence intro to let people have a sense of what Bitcoin is, which sounds like a good approach to me.