... I want anonymous users to be able to make purchases but I do not want them to visit or exercise the rest of the site as though it were ready for prime time. ... Does that answer your question?
Sort of... at this time, you can just have it set all users to blocked and remove any mention of the user account in the completion pages and e-mails. The customer would be none-the-wiser that an account was created for them, and they'd never be able to login to the site.
Joined: 08/07/2007