CYBERSPACE—To be sure, online platforms mimicking Instagram for a porn-bent audience are not new. One such site, Spain-based Pinsex.com, launched in 2012, followed in July 2013 by Pingay.com. Somewhat similarly, PornPitch, which refers to itself as "Facebook, Twitter and Instagram just for porn," launched late last year. And surely there are others. But you haven't seen anything yet. The 'grams are coming.

One has already launched. Pornostagram.com is being marketed as a salvation for the masses. According to an article posted today on Refinery29, "Instagram's terms and conditions (you've read those, right?) don't allow for anything racy to be shared on its platform. It's even banned certain hashtags because they put users at risk of viewing 'inappropriate' or potentially harmful images. But, what if, for whatever reason, you really wanted to share that topless selfie? Post it on Instagram and you're account could be terminated; post it to Pornostagram and watch as the likes roll in."

The inspiration behind Pornostagram isn't quite new, either. "Quentin Lechemia, a French web developer, launched the app (currently available for Android) because he saw a demand for a platform that allows users to post NSFW pictures in a safe, non-judgmental space. It functions similarly to its SFW sister with filters and all that kit and caboodle."

Refinery29 acknowledges the existence of Pinsex and also Fuckbook, calling them "NSFW-social media spinoffs," and paints the new site as a place not so much for porn stars. "Lechemia noted in an e-mail to TDD that most of Pornostagram's users are your average Joe and Jane who want to share their riskier side — one that Instagram won't allow," reported the site.

But we were curious why Lechemia went with a somewhat challenging URL, and not the easier to remember "Pornstagram" or even "Pornagram?" Then it occurred to us that they may have already been taken, which turned out to be the case.

Not surprisingly, both are being developed. Pornstagram.com has a landing page in place, with a body shot of a woman teasing her skirt up, and the words, "Coming Soon..." Pornagram.com is just a parked page, with the promise, "Under Construction."

So hold on to your knickers, because the 'grams are here and more are on the way.