You're prioritizing users who are willing to spam their friends about a product they can't even use. I would be _far_ more likely to tell my friends about the

You're prioritizing users who are willing to spam their friends about a product they can't even use. I would be _far_ more likely to tell my friends about the product if I could actually use it and be able to vouch for it (as I have with the mobile version of TextSecure/Signal). Forcing me to get my friends to visit a page where they will find out about an application they can't even use is just annoying.