Originally posted by Time Immemorial
It's actually pretty smart, the ads that I see on the iPhone are off GPS , how does it work, seems to know where you are and what you might be interested in.
Tracking software, usually via cookies. Most sites trace your clicks and the data is stored on your computer (or through their internal servers). So, like, if I go shopping on Amazon and don't clear my history/cookies/etc., the next time I log on Facebook, the ads would be very similar to whatever I looked at on Amazon. Or if you have an account with Google and are doing searches while logged in, you're more likely to see that stuff in ads on sites that are partnered with Google (which, at this point, is about 1/3 of the internet). Or, for an example, every time I log in on Yahoo, I get flooded with fantasy football stories, because 90% of what I use Yahoo for is to update my fantasy team(s).
If I didn't have an ad blocker, it would be worse. But that's how it works.
It's great marketing, if a bit subversive. I erase my internet data routinely and run a few plugins that handle it, but most don't, so it can seem intrusive at times.