A quick look at the table that shows the effect of varying the Viral Cycle Time shows that customer growth is dramatically affected by a shorter cycle time. For example, after 20 days with a cycle time of two days, you will have 20,470 users, but if you halved that cycle time to one day, you would have over 20 million users! It is logical that it would be better to have more cycles occur, but it is less obvious just how much better. A quick look at the formula tells the whole story. The Viral Coefficient K is raised to the power of t/ct, so reducing ct has a far more powerful effect than increasing K.
Online courses have exploded in the past five years. Experts and creators can now create video courses to teach others their craft. A course can be about anything that people want to learn. Friends of mine have created courses and say the amount of effort is similar to writing a book. But once its done and starts to sell, it’s a solid passive income stream.
I'm going to add in something that has yet to be said. You CANNOT plan to create a viral piece of content or viral marketing effort. The virality of information and messaging is subject DIRECTLY to the audience and how it sees, understands, shares and promotes this content. The major failing of any and all marketing departments and C-suite executives is that they request a viral video or viral image or viral tweet to help build the brand or promote an event. It. DOESN'T. WORK. YOU. CAN'T. DO. IT. If there were a true formula for creating viral content, it would be worth BILLIONS and only the most successful companies would own the patent on the strategy and methodology. Viral just happens and you thank your stars if it happens for your content or message. Now move along. Real marketing takes hard work and thoughtfulness.
It isn’t easy to create a YouTube channel that is popular. If you’re not a funny person, don’t try to upload wacky videos – it won’t work. But you might find traction uploading quality how-to guides in your field. Because there is so much traffic, no field is too small. Creating videos on YouTube is also a really good way to add quality to your blog or website.

Between 1996–1997, Hotmail was one of the first internet businesses to become extremely successful utilizing viral marketing techniques by inserting the tagline "Get your free e-mail at Hotmail" at the bottom of every e-mail sent out by its users. Hotmail was able to sign up 12 million users in 18 months.[67] At the time, this was historically the fastest growth of any user based media company.[68] By the time Hotmail reached 66 million users, the company was establishing 270,000 new accounts each day.[68]
The ultimate goal of marketers interested in creating successful viral marketing programs is to create viral messages that appeal to individuals with high social networking potential (SNP) and that have a high probability of being presented and spread by these individuals and their competitors in their communications with others in a short period of time.[9]