Ask HN: Google I/O costs too much for developers, Where to go instead?

You know, when computer security conferences started getting too expensive, the BSides Security conferences were born. The idea was this: security conferences are too expensive, but all the speakers are in town. Let's ask them to come and talk for free at a free conference in the same town at the same time ... and it worked! Today, there are BSides conferences that take place all over the world. Learn more at http://www.securitybsides.com ... Maybe something similar could happen in the developer world?

Silicon valley code camp is free, but not until fall. What area of development are you interested in?

Where are based/where would you be willing to travel?