Is the term Spreadable Media going to replace the term Viral Marketing?
I do not think so as it does no have the right feel. It is not exciting and going to draw attention the same as the name Viral Marketing does!
In an interesting blog post by Iain in his EngageSciences blog on Speeadable Media vs Viral Marketing he has a great explanation of the evolution of Viral Marketing. He defines how over the last couple of years MIT Convergence Culture Consortium have recommended replacing the use of the term Viral Marketing with the name Spreadable Media.
He also has a great explanation of how Viral Marketing came to prominence with the launch of Hotmail. Hotmail spread the word by adding a link at the bottom of all their emails so that others could sign-up easily, without running expensive advertising campaigns. Read his full post including an impressive infographic at EngageSciences.com