I ran a 5-day experiment to see how fast Google reshapes your ad profile

nanobuilds

Three fresh Google accounts on different US residential proxies. Two browsed with specific personas (fisherman, fitness). The third did nothing for five days. Google was more aggressive than I expected. 17 new ad interests from a single session. By Day 1 it was already removing interests and replacing them. Not adding to your profile. Rewriting it. The control didn't move once in five days. I built a Mac app (MirrorMask) that does this against your real profiles. Happy to answer questions about the experiment or methodology.

lapalapa

Nice ro read. At home, we use 3 tablets and one television on one Google account. All of us have own Google accounts on own phones. I have different Google account on different machines (linux, mac, win10). The first Google account have some random ads on TV and tablets. Practically without real content for each of us. On phones are more targeted (wife, kids) but still randomised. The strange thigs come on accounts that are on my working machines. All are on same IP range like other devices, the difference is the OS. All ads are different. Sometimes womans stuff, aliexpress, amazon. Without any logic. Im coming from a small European country but all ads on working machines are american or chinese (english language). On other devices are in my language. Any idea?