> within 48 hours ads for GAP and all of their affiliated sites started showing up in my Twitter feed That's called "retargeting". The advertising network trac

> within 48 hours ads for GAP and all of their affiliated sites started showing up in my Twitter feed That's called "retargeting". The advertising network tracks your web activity across multiple sites, and advertisers pay extra to target you because you've visited their site previously. Ad blockers break the code that tracks you around the web and the display of ads, whether new or retargeted. There are some decent options for iOS.