5e124423_A_Conference___Altimeter_Group__Upsides
[Use Cases] Learn about new trends [Downsides] We've not seen any major breakthroughts in the last few years, with the exception of Grumpy Cat memes. [Upsides] 
Historically, new technologies have gained grown here, from Twitter, to a rash of location based apps.
SXSW is a Festival –Not Just A Conference | Altimeter Group
Upsides