Tech industry as discussed in HN is very different from "tech". I have struggled to define exactly what it means but the typical companies include Google, FB, P

Tech industry as discussed in HN is very different from "tech". I have struggled to define exactly what it means but the typical companies include Google, FB, Pinterest, Airbnb, Uber and the like. They don't necessarily have to be in Silicon Valley / Bay Area but they all share a certain commonality irrespective of what domain they operate on.