Ehy Guys I need some Viral Idea ;)

I have made a fake facebook application and i need some code, idea to make it viral in a black hat powerfull way ....
The question is anybody have some usefull code to make an application viral?


My IDEA

.."if you want acces to this app. you have to invite same frien before "click here"...

When a guy click the "click here" the app send a notific to each friend and he will be redirected to the app page !

How can i do that ?

Any Idea?

Thanks for the help

for me is a fantastic idea ....
and is not so difficult
simply a button that if clicked send a notification to each friend and than redirect the user ar the content ...
simple incentivation marketing ....