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.
Diversify safely but DIVERSITY. You do not need to get the best and highest return all the time. If so, you are not earning passive income you are earning active income which is taxed differently (see IRS.GOV passive -vs- active income definitions). As an investor you do not need to be chasing ‘the almighty dollar’. This is a losing proposition. Make the dollar come to you.
If you have decent writing skills you can start a retainer writer business. Mastering your pitch will put you in a position where you can land awesome writing gigs. You can then complete the work yourself as you establish yourself in this space, and from there, the sky is the limit. Outsourcing is key to creating a passive income stream from this idea.

The more residual income you can build, the better off you’ll be. In fact, it’s said that the average millionaire has 7 different streams of income. By creating passive income streams that generate money while you sleep, you’ll build wealth faster and diversify the ways you’re able to make money – which helps protect you from the loss of any one individual income stream.
When money is lent to a partnership or S-corporation acting as a pass-through entity (essentially a business that is designed to reduce the effects of double taxation) by that entity’s owner, the interest income on that loan to the portfolio income can qualify as passive income. As the IRS language reads: "Certain self-charged interest income or deductions may be treated as passive activity gross income or passive activity deductions if the loan proceeds are used in a passive activity."
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.