I would recommend checking out the cooking.meta post here; they pulled together a list of popular cooking blogs and other resources and generated an email campaign for a lateral distribution (rather than a top down like reddit, digg, etc.). If everyone pitched in and started an email campaign, or as they recommend just put together a generated chain (from their post) a la:
[Dear whoever],
[EDIT ME SO I AM AN IMPRESSIVE LETTER TO SEND TO A RESPECTABLE WEBSITE.]
[Sincerely],
[Us]
This might be a good model for the betas going public.
