In 2011 I bought DW - Hack for 5 bucks online...and it changed everything for me. No more power-gaming rules lawyers. It was all about the story.
I have converted 2 groups since. The first time, 2 players were sold after the first game. The 3rd, brooding lone badass with a 3 page back story, took 4 games to convert.
Now I sit, on the eve of demo-ing DW at my local game store.
On our first foray, the in-house DM was blown away by the speed & freedom.
Tomorrow I run a DW session for 4 DMs who want to 'experience' DW.
So, I go to spread the Gospel of DW.