On October 5th, I was the speaker at the symfony day, and I was lucky enough to be able to close the conference.
It was a very interesting experience, although excited I talked about what I know best: improving the performance of a web application.
 Two months after the talk, visitors pass the 1,200 visits (December 2012).
There were a lot of other interesting topics:
Symfony2 Security Layer - by @K3A, explained in detail the most difficult part of the symfony documentation.
PHPUnit raised by Symfony2 of @euxpom, showed how many utensils you have for free by the Symfony2 framework
Symfony CMF of @jacoporomei described with an overwhelming sympathy a subject very dear to me the CMF and his architecture.
See you next year symfonyday.it
a special thanks @cirpo