Highlighting worrydream (I think) was less about the site, and more about the site content. Bret Victor has dedicated an incredible amount of time to writing about design [1], visualization[2], reality[3], climate change[4], among other things.

1. http://worrydream.com/#!/LearnableProgramming

2. http://worrydream.com/#!2/LadderOfAbstraction

3. https://vimeo.com/115154289

4. http://worrydream.com/#!/ClimateChange