While revenge porn has existed as long as the intarwebz itself, in early 2011 a rapidly-growing website called is anyone up appeared, providing a prominent and heavily viewed destination for those who seek such vengeance (or simply wish to view the results, or fap to them). The key element of this site is that it not only offers a place for revenge porn, but also links to the subjects' Facebook pages, thus increasing the lulz and/or humiliation factor exponentially.
As modern culture becomes more deeply immersed in digital technology, and as desperately horny homo sapiens continue to send each other home made fap material, rapid growth of the revenge porn industry seems all but inevitable. Additionally, from a legal standpoint (at least at the time of this writing), revenge porn is also virtually *unstoppable*, due to a legal loophole protecting the owner of any such website from criminal prosecution (see Section 230 of the Communications Decency Act of 1996).
This author's advice to all users of social media who have any concern for the confidentiality of their n00dz