For those of us trying to navigate through all the web technologies and what to learn next, this survey is interesting – with a very good use of charts. It shows how people responded about their awareness, their actual usage, and of those that had used a technology, their satisfaction / willingness to use again.
Additional charts show which other technologies are most likely used with each other. For example with React they are likely to use ES6, Redux, Webpack).
Just wish they had included Polymer.