Jon Millward published the results of ten fake OkCupid profiles to asess the male-female dynamic in online dating.
OkCupid is for fun dating, for entertainment purposes, for instant gratifications; not for serious dating.
Since the beginning of 2003, I had been testing online dating sites -intended for serious daters- by creating dummy (fake) Male/Female profiles and using them as test points for reverse engineering purposes.
I) Several studies showing contraceptive pills users make different mate choices, on average, compared to non-users. "Only short-term but not long-term partner preferences tend to vary with the menstrual cycle"
II) People often report partner preferences that are not compatible with their choices in real life. (Behavioural recommender systems or other system that learns your preferences are useless)
III) What is important in attracting people to one another may not be important in making couples happy. Compatibility is all about a high level on personality similarity between prospective mates for long term mating with commitment.
Also there is a similarity trilogy between genetic, mate choice and personality based recommender systems.