The best crowds for IOTA adoption, at least for prototyping and PoCs is DIY/Tinkering crowd. This means people playing around with Raspberry Pi's, Arduino, Intel Edison/Quark and equivalent stuff. Another would be projects/initiatives that pertain to Smart Grids, Meshnets etc. In fact I got a call with another such initiative in a couple of hours.
It's these guys that will bring the best and easy to grasp understanding of what a decentralized IoT m2m economy will look like through clusters of Rasp Pis etc.