JUlesvern, it's become a convention (and by no means a hard and fast rule) that it's only hints or additional clues that are provided for some puzzles. These are mainly the Guardian ones, and also the Radio Times. On most other puzzles, answers are sought - and gratefully received. IIf people want hints, and hints only, it's easy enough to say so.
I'd say that threads with answers are far more the norm - and I think the people who run the site seem happy with this.