Maybe you shoulld stzrt small. I mean, the contest in this post is a way too difficult for the average Steemkan.
It's jusg an idea, but how about starting with a contest in which you ask people to create promo material (banner set, full page ad,radio or tv commercial, social media ads etc)for one of the dApps at a time. My best idea to start off easy would be actifit.
You could also set up a sort of bounty campaign for people whoare spreading the word about the app.
Ifthat seems to work, do the same for Steepshot or Appics. With so many dzily Instagram users, I thinkthere is a mainstream market for it.
But mybest gipwould be: start small and slowly build your way up...
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