Looking at the SXSW schedule, it's hard to know where to start. There are some big names - Facebook funder and chief executive Mark Zuckerberg is giving a keynote on Sunday, the PostSecret mastermind Frank Warren and games designing futurist Jane McGonigal. But ask any SXSW veteran and they'll tell you that it's not about the headliners; the throng of pilgrims gathering en route all said the same thing. It's about meeting interesting people and finding out what will be the Next Big Thing in interactive media.
Last year, Twitter was the runaway hit of SXSW. It meant SXSWers could organise meet-ups on site but also bullet point the festival for everyone that couldn't make it.
This year, the safe money's on Seesmic, most easily described as a video version of Twitter. Jo Twist, BBC Three's multi-platform editor, is already an addict, so we'll be keeping an eye on her. We've also heard that Tumblr could have a Eureka moment this year.
