Words at Play : Top 10 User-Submitted Words, Vol. 5
Definition:
(noun) : the popularity of something (such as a story or Web page) that is spread quickly and usually by direct recommendations rather than advertisements or news media
Example:
"... we also know that you can't manufacture true virality on the net, and if you need any convincing there's a great PCWorld article ... highlighting some embarrassing corporate attempts at this." blog post at elance.com, November 2, 2010
Submitted by:
Ravi G., CA