5 C's of Viral Marketing

There is growing opinion that there are 5 c's of viral marketing:

Community
Compelling
Comedy
Charity
Contests

The Great Turtle Race (www.GreatTurtleRace.com) is good example of this. This website talks about many other examples, including the incomparable "Will it Blend" series for BlendTec blenders.

http://overtonecomm.blogspot.com/2007/03/5-cs-of-viral-marketing.html