FOMO -- or the fear of missing out -- is a common complaint at the South By Southwest Interactive festival in Austin, Texas each year.

It's here, after all, that "Girls" creator Lena Dunham spoke on Monday at the same time that NSA whistleblower Edward Snowden gave a teleconferenced talk. All the while, 7-11 trucks handed out free pizza in exchange for a tweet, and IBM showed off the capabilities of cognitive computing in a language anyone could understand: food.

Here's a sampling of what you missed if you weren't able to make the annual geek pilgrimage: