[sama]

The thing we look for the most is a small number of users that are super, super engaged with the product.

Most new social networks we see point to their top-level growth of new users. These usually eventually fade.

What you want instead is something that starts with a small number of users that use it many times every day. Snapchat is a good recent example of this phenomenon.

[mahyarm]

Same with

- pinterest: some collection of moms in middle america

- twitter: SF Tech & SXSW

- facebook: ivy league colleges -> colleges -> high schools -> the world

- snapchat: so-cal teenagers