I stumbled across this interesting post in my Interwebs travels today
http://blog.okcupid.com/index.php/dont-be-ugly-by-accident/
Key points of interest, better cameras take better photos, the flash adds years to your image, and iPhone users have more sex!
While its amusing there are some valid and interesting pointers to be taken out of this if you are a portrait photographer. For example, the best photos have a shallow DOF featuring the subject and blurring the background.
Interesting stuff!
Learning to See Light 