South By Southwest has been going on since 1987, but since it added the film and interactive media festivals it's really taken off and now with the growth of digital media, it's growth is viral. Viral because it's a festival about content related for digital media, and digital media itself, and then it's reported about using, you guessed it, digital media. A unique convergence. Take a look at this video blog:
I increasingly get the idea that the excitement in digital media is as much in cities like Austin or New York as it is in the Bay Area. We've got nothing like SXSW and yet it's something perfectly Bay Area. I think the main problem here is the cost of living is driving away the creative people that feed the digital media community. What's more the problem is that the Bay Area leaders are too out of touch to see this as a crisis.
When more cities -- or maybe that one city like Austin -- starts luring Bay Area firms away, then they'll wake up. But California's lost a lot of movie production activity for the same reason, so maybe not.