It’s a new year, and a whole new SXSW, but some things don’t change. Thanks to an endless stream of parties with open bars, the warm nights, and a large population of web-curious visitors descending on Austin, the tradition of the SXSW hookup lives on. And Down wants to help keep that tradition alive. Twelve months ago, Down was just a little web app called “Bang With Friends” which sought to help users find out which of their friends also wanted to bang them.