Aside from such a scheme, I just don't see the valuation as warranted. I could stomach a billion and maybe two, but this is just selling to the greater fool at this point.
Step 3: ???
Then step 4 is: Profit!
Edit: I am deeply skeptical that a market filled primarily with people who have little or no income will support an ad-based revenue stream valued at $10bn. I would be even more skeptical if the revenue for SnapChat were supposed to come from a pricing structure.
I myself have migrated my primary messaging platform through half that list. Isn't there a tremendous risk snapchat users leave that platform the way users have moved from one messaging platform to another for years?
It will happen one day.
The real value that they have is the huge user base of kids who will forget about snapchat once they go to college.