If you still don't yet have a key for the Counter-Strike: Global Offensive beta, you may want to try your luck at Neogamr. They have 15 keys to give out in what appears to be a random drawing.
If interested, check that out within the next two days as their drawing ends at the end of the day on April 30th.
If interested, check that out within the next two days as their drawing ends at the end of the day on April 30th.