When I was still on OKCupid, I once wrote a Chrome extension to hide the pictures. I found that I had, in general, a much better experience with the site - I'd actually read people's profiles, I sent better messages, and I got more responses. I eventually gave up on it when a site redesign changed some of the #ids I was depending on and I didn't feel like revamping the code. But interestingly, my eventual girlfriend had terrible pictures - the grainy, multiple-people-in-the-background sort you're never supposed to put on a dating site. Setting up our first date, she was like "We don't need to exchange numbers, you know what I look like", and I was like "Actually, I'm not sure I do, here's mine." (Okay, I didn't actually tell her her pictures were terrible until we'd been dating for six months or so, but that was the general sentiment.)
I think it's one more example of when people's emotions and desires lead them to suboptimal outcomes. Most of the cues we associate with beauty and sexual desire evolved back in the savanna when health and fertility were very real risks; being able to pick up on which potential mates would be able to carry healthy offspring to term and nurture them until adulthood was very important then. Nowadays, the far greater risk is that you'll hate each other and fight all the time, but this has only been a concern since people started living long enough and in close enough proximity to care.
> my eventual girlfriend had terrible pictures - the grainy, multiple-people-in-the-background sort you're never supposed to put on a dating site.
This is not what people mean when they say someone looks terrible in their pictures.
The point of the experiment is to withhold information about whether someone is physically attract, not about whether they have good photography skills. The only reason to avoid putting up grainy pictures is because people will assume you're not good looking and are trying to disguise this fact.
"The type and brand of camera you use has a huge effect on how good you look in your pictures."
"There are peak times of the day to take a good picture." ala you are more attractive in photos taken at sunrise and sunset.
Between that blog entry and the other ones on the topic the conclusion really is that how attractive you are in real life and how attractive you are in your photo can have very little correlation.
Previous OKTrends blog posts and their MyBestFace feature have shown that putting up poor-quality photos has the same effect as being ugly. People just assume you're ugly.
I think it's one more example of when people's emotions and desires lead them to suboptimal outcomes. Most of the cues we associate with beauty and sexual desire evolved back in the savanna when health and fertility were very real risks; being able to pick up on which potential mates would be able to carry healthy offspring to term and nurture them until adulthood was very important then. Nowadays, the far greater risk is that you'll hate each other and fight all the time, but this has only been a concern since people started living long enough and in close enough proximity to care.