The problem with this private beta, as I see it, is that you've gotten a sizeable portion of your potential early adopters interested in the product; but now you just repeatedly frustrate them by keeping them out of the beta without even so much as an email update. I've been on your list for years with nothing but radio silence. You might have been better off staying in stealth mode, because now, whenever I hear the term "AeroFS" I just feel irked and disappointed. It's like you're trying to alienate your biggest fans.