I believe Google Developer Day 2011 required a coding challenge and the Last Call for Google IO 2011 also allowed around 100 developers free attendance for a su

I believe Google Developer Day 2011 required a coding challenge and the Last Call for Google IO 2011 also allowed around 100 developers free attendance for a successful coding entry. Here's some study material: https://sites.google.com/site/opencallforgdd/ https://sites.google.com/site/opencallforgdd/ https://sites.google.com/site/lastcallforio2011/Home https://sites.google.com/site/lastcallforio2011/Home