5e124423_A_Conference___Altimeter_Group__Upsides
[Use Cases] Unique Interactive Experience [Downsides] The chances of you experiencing a unique breakthrough moment are rare, as the event is dispersed. [Upsides] 
Concentrating over 25k people into a a few small blocks enables unique social and tech interactions
SXSW is a Festival –Not Just A Conference | Altimeter Group
Upsides