We have changed the domain for YAPC::NA 2012. It was yapc2012.us. It is now yapcna.org. The reason for this change is that we want to start a tradition of handing down resources from one YAPC::NA to another so that each new conference organizer need not start from scratch. So after YAPC::NA 2012, we will hand over this domain and a bunch of other resources to the YAPC::NA 2013 organizer, and they will hand it down to 2014 and so on.
Therefore we have a bunch of new links for you: