Nothing makes me giggle more…
than learning of a CLOSED beta test for a game and seeing all the people broadcast it on either Tumblr or Facebook.
You do realize these things require a NDA right? You should probably read the wall-of-text before you click the ‘i agree’ button, considering you can just as quickly be removed from the beta for even telling someone.
As historical reference, see the recent Guild Wars 2 CBT, where people who broadcasted all over facebook/twitter/internets were removed from it within a day.