Earlier quoted context omitted.
> Is there research how certain periods of the cycle would affect women shopping behaviour (or behaviour in general)? I am asking this to understand how much value is in such information. If someone stops having periods, that might be a sign they're pregnant. That's valuable to retailers (famously, some can spot when you're pregnant before even you know, by tracking purchases). Also, mood swings and specific cravings…
Absolutely, we're talking about a really lucrative segment here... > To marketers, the average Joe’s online data is worth around 10 cents. However, a pregnant woman’s data is worth fifteen times that: $1.50. http://www.salon.com/2014/04/28/one_womans_attempt_to_hide_h...
The reason for this is obvious if you've ever budgeted for a new baby in the house.