The Six Principles of Viral Marketing

This article is about the main principles of viral marketing. It provides good guidelines for creating a viral marketing campaign, along with information about what you can hope to achieve from doing so.

Among the information given in the article are useful things such as:

Viral marketers practice delayed gratification. They may not profit today, or tomorrow, but if they can generate a groundswell of interest from something free, they know they will profit "soon and for the rest of their lives"...

which explains that the payoff of a viral marketing campaign will not be short term thing, but when it finally comes around, it will be more than worth the effort put in.

I found the article useful when considering how to go about creating a viral marketing campaign, as it clearly highlights the differences between viral and ordinary campaigns.