Who else recieved a Beta code with their purchase of Halo: Reach

[Forgewolf]

When I bought my Halo: Reach game, on the receipt was the beta code. I went to the website it instructed, sign up this profile and entered the code. Who else has done this?

[Forgewolf]

When I bought my Halo: Reach game, on the receipt was the beta code. I went to the website it instructed, sign up this profile and entered the code. Who else has done this?