Seeing how many topics about different variants of "why im not invited" pop-up lately, I want to make one thing clear; alpha tests (no matter of what game) aren't as much fun as it seems for the people "outside".
Alpha-stage builds of the game clients are almost always heavily lacking content, buggy, unstable, unoptimized, lacking graphical bells'n'whistles. List goes on. They are meant for testing and searching for bugs, minor and major, not having tons of fun. Sure, being an alpha tester is an honour and being hyped for a new, promising game is normal, but from my own experience I know that a vast majority of people crying for an invite usually get annoyed/bored and stop contributing after a day or two. And this annoys me.
Let me give you an example; as a member of Combat Testing (on-line community cooperating with some game studios, including EA related ones) I was one of the first ~500 people on the planet (outside DICE) to lay my hands on Battlefield: Bad Company 2. We had access to an late-alpha build and our own dedicated server (passworded ofc) up around the clock. Was it fun from a gamer perspective? Nope, it wasn't. It was searching for holes in the map with entire teams walking across it side by side, trying to reproduce crashes step by step to report when they occur, fighting with hellish frame-rate issues, reinstalling drivers every 2 days and tons of other activities that I wouldn't call "playing the game".
Yeah, it was satisfying in a wicked kind of way, even tho we knew that we are basically working for DICE for free, but we were all members of CT; hence people who know how this type of testing looks like and what to expect. The truth is that majority of game companies use the terms "BETA" and "testing" for pure marketing purposes (ie. "beta" translates to "free 2 weeks trial pre-launch"), and because of that a LOT of people imagine fully working and polished products. It's not appropriate.
So, if after reading this with understanding you still want to join the alpha so bad that it needs its own topic I hope you will get invited

Regards,
n