A frequently used example of early viral marketing is Hotmail, the free web-based email service launched in 1996 that included in its users' outgoing messages an embedded advertisement and direct link inviting recipients to sign up for an account. This practice led to the fastest growth among user-based media companies at the time. Another example that illustrates how varied viral marketing can be is the ALS Ice Bucket Challenge. The ice bucket challenge existed before The ALS Association utilized it to raise awareness and generate donations, but the massive dissemination on social media of ALS Ice Bucket videos created a worldwide sensation that not only increased ALS awareness tremendously, but also raised $115 million in donations to the Association in the summer of 2014 alone.
Non-fiction e-books that educate your potential audience on specific topics like finance, online marketing, and business are going to make you more money than fiction books. Of course, there are always exceptions and you could write the next Harry Potter book, but if you want to create some residual income opportunities quickly, I would suggest you go for what sells first!
The reason to make use or virality, the ease in spreading and sharing, is however a double-edged sword. We cannot forget that in this type of campaign, a large part of the control falls into the hands of the users, and we risk the message being misinterpreted or parodied. On the other hand, a successful viral campaign can work miracles for your brand’s results.