There is Nothing SFW About This Image.
At left is the decidedly safe top corner of "Flesh For Fantasy (Girl #5)", an art print with an anatomical surprise smack-dab in the middle. See the whole thing here (N!S!F!W!).
It's part of an exhibit called Talk Dirty to Me, which is composed of pieces depicting sexual language and/or imagery.
This Hearts on Fire covered news of the exhibit in a manner neither lewd nor naughty, although you've still got the issue of a vagina staring flagrantly back at readers. Glam Media, which sells ad space on the site, didn't take to it and requested that the blog remove the image for the sake of "family brand" advertisers whose names may be sullied by appearing alongside it.
But hell, being in the industry he's in (ours), the author decided that in lieu of taking it down he'd post his entire email exchange with Glam instead. You can see that here, along with another arty sex shot and two more digital copies of the offending lips, just for the hell of it.
Way to stick it to the (ad) man, you stalwart blogger you.