Say you've been slaving away drawing steamy scenes between Madoka Magica's Mami and Pokemon's Ash, take a break and discover that Google searches are returning links to pirated versions of your doujinshi. How do you address that injustice? Nounanka (NSFW) has the solution, and, in manga-ish form, has instructed the artists on Japanese online community Pixiv how to send a Digital Millennium Copyright Act complaint.
If you're curious, Nounanka's raunchy stuff is very raunchy. Here are a few of his less trangressive pieces from his Pixiv page... or excerpts from works that get pretty naughty.