I generally find it easier to just put in the paragraph breaks when I post the story. Just expand the posting window, and it's not too bad.

As for dialog syntax, I dislike using sentences like this one.

Jenny said, "Fuck me baby."

The quotes already indicate speech. As long as I imply that this paragraph is about Jenny, I can get in some description with my quote.

Jenny was really getting into it. "Fuck me baby."

I proof read my stuff several times before I post it, but I still miss things. Oh well, I try.