All the details are here: http://www.thriftynerd.com/boards/viewtopic.php?f=11&t=972
The short version is you need to tweet this:
Win Portal 2! Just follow @thriftynerd and tweet with this hashtag: #thriftyportal - details: http://$$$$$$$/i9SGYt
The short version is you need to tweet this:
Win Portal 2! Just follow @thriftynerd and tweet with this hashtag: #thriftyportal - details: http://$$$$$$$/i9SGYt