Viral = Viral Coefficient > 1

It would bee great to also calculate the sales cycle, that's the missing key here...

Simple, smart and FUN! Great work (whoever did this)!

Awesome! I ask all my app advertisers what their viral coefficient is but few have a good way of calculating or even estimating it.

This is awesome! This gives an amazing idea about how product vitality works....so it starts really slow and moves in a geometric progression.

This is cool! It shows you mathematically what a "network effect" does to your membership-- if you invite 10 people, and they each get 3 invites, then 50% of invites are accepted... BAM, members after 1, 2, 3, etc. loops! It's a great way to think of the possibilities.

Totally awesome!

Great tool, thanks for sharing it. http://www.forentrepreneurs.com/... 4ever! :)