No, it's not porn. Sorry. And as far as I can tell by the search function, no one else has made a thread about it.
It's a website my brother told me about a few days ago called 200 Nipples. It's a t-shirt design company that prints 100 high-quality t-shirts, and the first one sells at a dollar, the second one at two dollars, the third one at three, and so-on until the get to the hundredth shirt. I thought it was a cool website both for people trying to sell some of their artwork and for people trying to buy a cool shirt at a dollar or two.