Yes, you certainly can make money while you sleep, albeit not easy as that. However, it s not that easy as put-it-and- forget-it kind of make money while doing absolutely nothing. In essence, passive income entails making money off something once the initial investment of either time or money has been made. Many people make money online doing very little more than posting links to websites, reading email, answering surveys, participating in discussion forums, writing blog entries, playing games, shopping online, and even stuffing envelopes. This isn’t rocket science, and anyone can learn how to do it if they set their minds to it.