The main page of Stack Overflow Careers site displays the popular technologies next to 'Keywords' label. I noticed it changes upon refresh (at least on first few reloads). I tried it in Safari and FF browsers and got different set of 'Keywords'. Here are the screenshots:
Firefox screenshot: (just showing 'Keywords')
Safari screenshot: (just showing 'Keywords')
As you can see I got different sets of 'Keywords' for the popular technologies (few repeating). So, I'm curious to know if there any specific algorithm or criteria is used while picking these 'Keywords'. Is it based on the popular technologies from Stack Overflow survey or the most tagged keywords on SO? or just random. Can anyone please explain this.
If not based on the survey, can it please be changed to take common tags from there?