Battlefield 3 beta cause a serious error in judgment. Community site BF3blog and Battlefield3Online point out that the "beta keys" on the site BF3nation are a scam -- also noting that the site's owners were also involved in a previous phishing scheme. EA has allegedly been trying to shut down the site, but has so far been unsuccessful.
When the Battlefield 3 beta is upon us, trust that you'll definitely hear about it from your buddies at Joystiq ... oh yeah, and the rest of the internet. It won't be something that'll fly under the radar. In the meantime, assume anything that involves BF3 beta keys is a scam. We've contacted EA for a direct quote on the subject.