You have to submit an email address to request access. I'm wondering if they are using their gmail address book data to see which emails are connected to each o

You have to submit an email address to request access. I'm wondering if they are using their gmail address book data to see which emails are connected to each other before handing out invites. So if 10 of my close friends and I (who all have each other in our gmail address books) request invites, we'd be more likely to all get accepted than interested individuals with no interested contacts. That might be a smart way to ramp up. Also remember that Facebook started out very privately, too.