I believe it uses your browser history to gauge your interests and bases its responses partly on the type of stuff you participate in repeatedly.
So if for example you browse websites related to privacy more than anything else, it takes that into account and gets all creepy about it.
It’s about pay. If the market is flooded, the hospitals will be free to lower their wages substantially because they’ll have more replacements available or they’ll be working with more people on the same budget.