I am using Titanium on one of my projects and it is a very nice, lightweight app framework that works great on my shared server. This is my first Perl web app and I found Titanium easy to use. I am using it with Template, DBIx::Class and a number of the excellent CGI::Application::Plugins that are available. The docs on CPAN are thorough, but of course I would love to see a book or a section of new Perl book dedicated to this worthy project.
From what I have seen, Titanium is to Catalyst what Pylons is to Django in the Python world, which also fascinates me. I really like the Pylons web site -- what about giving Titanium a shiny web site of it's own, outside of CPAN, but linking back. I think it would be some good marketing that Perl needs. This project is really good and deserves an autonomous home on the web -- written with Titanium of course.