As the action heats up in Austin, analytics firm Musicmetric offers a look at whose hot and whose not at SXSW. What new bands are getting the most buzz? What about last year's hot bands? The infographic also shows that SXSW has had a significant effect in boosting the online profile of its performers. At SXSW 2012, performers saw a 30% average increase in daily new fans during the event.