i dont see why not. i mean, this is an adult community. I think we've all seen porn here, and this doesn't even come close to some porns! I wonder if the person knows your posted about them?

The EOC specifically states that penetration and close ups of "naughty bits" are strictly forbidden. This goes for pictures in the forum, reviews and adult videos. I don't see why it wouldn't also apply to icons and banners. So yeah, submitting a support ticket or a friendly little message to the user wouldn't be a bad idea.

Posting it on the forum doesn't really do anything beneficial except draw attention to the user.

There's a difference between seeking out pornography and having it thrown on you when you weren't expecting it. Like innocuous thread titles that open up to an extremely descriptive erotic story...it's just poor etiquette.