I've used Kunena over an extended period, from the days when it was still known as Fireboard. It is an excellent extension and an integral part of my website. Before that I was running phpBB with frustration. For a Joomla based site this is the way to go! The development team have consistently shown a commitment to continued development of a high quality, secure and comprehensive component. I definitely recommend it to anyone looking for a forum component for their site.
Well done Kunena Team and keep it up! The hard work is appreciated.