There's now [quite a few Stack Exchange sites that are in public beta][1] on Area 51. According to [the Web Applications proposal][2], the "site's progress will be evaluated in 15 days" (as of this writing), so the "evaluation" is coming pretty soon.

Apparently the criterion for evaluating a public beta [is not set in stone][3]. But once a site passes evaluation, what is involved in making a site ["a full member of the Stack Exchange Network,"][4] exactly?

   [1]: http://area51.stackexchange.com/?tab=progress
   [2]: http://area51.stackexchange.com/proposals/57/web-applications
   [3]: https://meta.stackexchange.com/questions/56022/what-are-the-criteria-to-decide-if-a-stack-exchange-site-should-survive-the-beta
   [4]: http://area51.stackexchange.com/faq