Ask PG: Why no "Work At A Startup Day" this year?

Last summer there was a "Work At A Startup" day at Y Combinator in Mountain View. A large group of would-be startup employees filled the Y Combinator building and a number of companies gave presentations about why we should work for them. It was like demo day; except attendees wanted to invest their time as workers, not their money.

I'm just curious as to why this didn't happen again? Did the companies not recruit as many people as they had hoped? Did the "right sort" of hacker not attend?