On Stack Overflow Jobs, you can create your own Developer Story to showcase your achievements and advance your career. One option you have when creating a Developer Story is to add tags you would like to work with or would not like to work with:

This offers us an opportunity to examine the opinions of hundreds of thousands of developers. There are many ways to measure the popularity of a language; for example, we’ve often used Stack Overflow visits or question views to measure such trends. But this dataset is a rare way to find out what technologies people tend to dislike, when given the opportunity to say so on their CV. …