For those who are itching to try DOTA 2 and was not able to obtain their keys in the previous beta key wave distribution, here’s another chance to get one of those keys plus get an additional 2 more keys once you get picked which you can either share with your friends or hog it all if you’re that greedy.
All you need to do is complete the DOTA2 Survey provided by STEAM. Stay tuned as well as I give out my two extra keys! Follow me @Twitter [Nendogamer] for updates regarding about the said two beta keys!
Source: DOTA 2 Blog