When I come to GA, I'm looking for stories with substance. I have absolutely no issue when an author will allude to sex, but if I'm reading a story that is focused on relationships between characters, I'd rather not read a detailed play by play of what happened in the living room, then the bedroom, then the shower, then the kitchen, and then the small decorative ledge above the fireplace. I get bored when I read a whole paragraph about a bead of sweat tracing down his luscious body and how it represents the co-mingling of their essences in the most natural, ageless, purest form of affection. If you're going to do a tasteful sex scene in a respectable story, I say give good recap and don't spend much time there.
When I go to Nifty, I'm either looking for either GA quality stories that fell through the cracks, or pure smut. In the literary porn I like a simple storyline but steamy sex scenes. But again, I don't like the sex scenes to be bogged down with details. I don't need to read about each thrust, each grunt, all the different tongue techniques used in giving head. Details don't let me imagine it for myself, an elaborate summary does that.