After reading the latest bad review of the Siren Bookstrand book at Dear Author (sorry, blog is wonky today and I cannot get the linking function to work for some reason, but I'm sure you know where to look) and following some other links to places where bloggers talk about the number of badly written books being published, I find myself thinking: will a reader forgive a book with poor spelling and bad grammar and awful writing style if the sex scenes are hot? Have you ever kept a book because while you recognize that it's badly written, you like the sex scenes because they work?
I have done this when it comes to some of Thea Devine's books. I'm not proud to admit it because the author often writes as if she's living in her own world of streams of consciousness, what with all that fragmented italicized sentences and all, but dang if some of her sex scenes have me reaching for a cold drink. Same with some of Bertrice Small's earlier books. Horrible books, them all, but as erotica, even with the purple prose galore, some of those scenes are pretty steamy indeed.
I guess it depends on why a reader picks up a book. If the reader knows and expects nothing but a quick steamy read just to get one's jollies off, to put it crudely, I guess other aspects of the story aren't really that important. Kinda like how if you watch a big action-packed movie starring some beefcake of the day, you tend not to expect deep plots and good acting, I suppose.