As a decade old company with forums even older that that (!) the Team at Vanilla was able to port over our collective knowledge into a platform that is mobile-friendly, intuitive and fun to use. We have seen our time-on-site increase as well as overall engagement.
The addition of gamification (badges) and the ability to easily embed photos, videos and GIFs has made the user experience something that folks rave about. And the fact we could leave our old, outdated software behind (good riddance!) enables us to focus on Customer Success vs Tech Support.
Finally, the turnaround time for support questions and modifications (included or paid) via Vanilla is both transparent and quick. I've never had to wait more than a month for a feature, and my support rep replies in less than 24 hours ever time.
What's not to like?