Excellent question! A few stats:
(bear in mind it's been 167 days, and we often let betas go on indefinitely if they are producing great content. Quality is, as they say, Job One.)
Also refer to Robert's post here:
https://writers.meta.stackexchange.com/questions/221/what-happens-now
But if that's TL;DR, in general help us grow your site!
Share great questions and answers
http://blog.stackoverflow.com/2010/09/announcer-booster-and-publicist-badges/Vote, vote, vote
http://blog.stackoverflow.com/2010/10/vote-early-vote-often/
https://security.stackexchange.com/users?tab=votersLove and reward your new users for being awesome!
https://security.stackexchange.com/review
https://security.stackexchange.com/usersTry to attract experts to the site by helping them get answers, too:
http://blog.stackoverflow.com/2011/04/helping-the-experts-get-answers/