c2033f7d_ove_the_Crowd___By_Bill_Gurley__Metric_
[Comments:] These are about as strong as you could design. All current non-US Facebook users have immediate connections if they log-in. [Grade:] A+ [Metric:] 
Presence of Network Effects
Why Facebook Clearly Belongs in the 10X Revenue Club | Above the Crowd | By Bill Gurley
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