outstanding questions in cyrus documentation

questions we really should answer. if you feel like doing us a favor, sit down and answer one.

what's the difference between "authentication" and "authorization"?
why is it so hard to get imapd working with redhat's shadow password implementation?
When does imapd advertise PLAIN? when does it accept plaintext logins?
What are the advantages of LMTP?
How do I configure Sendmail to use LMTP?
How do I configure Postfix to work with Cyrus? To use LMTP?
How can I run LMTP over TCP? Why should I want to?
What are the performance implications of single-instance store? (in effect as of 1.6.22) How should I configure partitions to deal with a large number of users?