I'm italian and I'm a developer of PostNuke CMS. I found tiki very advanced and I'm starting using it for some intranet work.
I hope to give some help to this developers' community.
You can found me on Jabber, at lorello at jabber.linux.it
You can send me an email at l DOT salvadorini AT framalo DOT net
You can come to Italy and make me a visit, I'm always very happy when someone jump up from nowhere