In this particular case, I think what really happened is that ad network(s) have guessed when your kid(s) birthdays are, probably due to searches at or around t

In this particular case, I think what really happened is that ad network(s) have guessed when your kid(s) birthdays are, probably due to searches at or around the same time last year, browsing the toys section on amazon, then visiting Party City, that kind of stuff. No less creepy, but can understand why you'd think that.