So far I have had 2 Joomla websites to use JRPassphrase on. A Non-profit organization, and a class reunion website. The ability to customize the text inside the module with html enables me to fit each websites template and content. You also have the ability to make your own custom "Wrong Passphrase" page for those who incorrectly guess at the Passphrase.
For anyone who is considering a "closed" or "private" type of website, this is a MUST HAVE!