Play store
I hate it when a company tries to guess what I want to do next. Pretty much every time I’ve got back from holiday, tripadvisor mails me holiday opportunities for the place I’ve just got back from. And if I buy a watch on amazon, I’ll get an email saying “we thought you might like these next” and it’s a bunch of watches. eBay is the same, bought some speakers, get an email about other speakers. The best AI at this point would simply decide not to email me at all. Whilst that would make my day, it wouldn’t last long in the relevant data centre.