Hello,
my apologizes if this email look business oriented for this list, but to answer some questions in the last time, there is now a dedicated professional training program for kamailio (openser) and sip-router.org:
http://www.asipto.com/index.php/sip-router-masterclass/
Community wise, each time will be a Social Networking Event (dinner) where everybody can join and have a chat with other folks developing or using these projects.
Thanks, Daniel