Hi Tony,

I appreciate you being such an open, honest and bold about your findings and calculations on ROI with WordCamps. My company Multidots has also been the sponsor for many WordCamps. We have never cared and calculated our ROI with WordCamps as we have focused more to make Multidots a famous and loved brand in WordPress Community and stay in the community to learn and explore WordPress as Platform, meet and engage with other WordPress enthusiasts.

From the service agency perspective, I have found investing in WordCamp both time and money has always rewarded in a better way - new relationships, good exposure, trust and reputation among existing clients etc. But, not sure from the Product perspective.

I would say all my recent participations as Speaker and Sponsor has been the quite rewarding, But, I'll start tracking our ROI onwards in more precise way and will surely share in the future somewhere. Also, I think you have addressed interesting facts about the audience and I am going to observe and monitor that in the upcoming WordCamps.