Visitors to porn hub Pornhub this month are greeted with a pink-ribboned logo, and this header:

Which, if clicked on, takes them to this page:

The text reads:

Help Pornhub support breast cancer research simply by watching videos! Hey, we all love boobs! So this October, Pornhub will donate 1 cent for every 30 videos viewed from our big-tit and small-tit categories. The more videos viewed, the bigger our donation will be to a breast cancer research charity. How can you help? Click below to watch the best big-tit and small-tit videos on Pornhub. While you're enjoying the boobs, you'll also be helping to Save the Boobs!

Much has been written about the "pink-washing" industry - companies putting a pink ribbon on products which donate fractions of cents to breast cancer research, and then claiming the ethical kudos - and equally, many have complained about the focus on breasts, rather than the women behind them. A good place to start would be Xeni Jardin's twitter feed, or s.e. smith's piece at this ain't livin. But if this example doesn't sum all those problems up in a nutshell, I don't know what does.