No CAPTCHA or Gatekeeper MODs were added. Image CAPTCHAs suffer from usability issues, and there was some debate as to if we should add the Gatekeeper MOD. At this point, we're not going to add it to the base code just yet.
There is a pseudo-random field added to the registration form to keep bots from bypassing the form, Jeff's MOD for selecting which fields to require has also been added, the e-mail domain blocking code has been added, and Rui's MOD for preventing people from sending e-mails before they've reached x posts - as defined by the admin. (and can also be overridden by the admin if s/he knows the individual)
With the exception of the extra field on the form, all the MODs can be turned off by the Admin if they so desire.
There are a few cleanup tools that have been added as well - like the "Zap Profile" MOD, and the ability to delete all posts by a given member, etc.
A complete list will be posted when the last round of testing is done.

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