Whoa, whoa, JinnKai--there were plenty of pictures of women with small breasts who were quite skinny. I would say the number of obese women featured on the website is probably in line with the number of obese women in society.
One of the things I found incredibly interesting was how many of the women are wrestling with a problem I myself am facing--after losing weight, your breasts get saggy
I didn't lose much in the way of cup size, but I lost about four inches off of my band size--38C to 34C. I'm just glad mine didn't get uneven like some do. I wouldn't say having breasts that droop a little when they're naked is a bad thing. But I have been investing in better bras to keep them from possibly sagging more.