Thanks @ajvest! I really appreciate your comment.
I'm not sure if I'll do another one as I'm not a big promotional person. I feel like I don't yet have enough influence and reputation to run a contest like this again (yet). Maybe that will change in the future, but for me this was an experiment to see how it would turn out. I gave out a lot of rewards because I really do care about this topic. I hope others will certainly keep the conversation going.